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mosquito-borne arboviruses in arctic america.mosquito-borne arboviruses are prevalent throughout subarctic regions of canada and alaska, principally in the boreal forest extending between latitudes 53 and 66 degrees n, but they have been identified in tundra regions as far north as 70 degrees n. all mosquito-borne agents have been bunyaviruses, comprising principally the snowshoe hare subtype of california encephalitis (ce) virus, but also northway virus. mosquito vectors comprise several aedes species and culiseta inornata, all of which h ...19751602
naturally occurring murine leukemia viruses in wild mice: characterization of a new "amphotropic" class.a new class of murine leukemia viruses, isolated from wild mus musculus trapped in california, is described. these viruses, designated "amphotropic," replicate in mouse, rabbit, mink, human, guinea pig, and rat cells, but not in hamster, quail, or duck cells. they show n-tropism for mouse cells, and do not trigger the xc cell response. they are distinct by interference and virus neutralization testing from the previously recognized mouse-tropic and xenotropic mulv classes. mouse-tropic viruses o ...197659816
amphotropic host range of naturally occuring wild mouse leukemia viruses.seven murine leukemia virus field isolates (uncloned) from wild mice (musmusculus) of four widely separated areas in southern california show an unusually wide in vitro host range. they replicate well in human, feline, canine, guinea pig, rabbit, rat, and mouse cells, whereas bovine, hamster, and avian cells are resistant. since this host range includes that of both mouse tropic (ecotropic) and xenotropic murine leukemia viruses, they are designated as "amphotropic". no purely xenotropic virus c ...1976181592
california encephalitis in michigan: coincidence or an unrecognized health problem? 1975234568
host-feeding patterns of mosquitoes, with a review of advances in analysis of blood meals by serology. 1975235647
cardiac transplantation at stanford.increasing survival of cardiac allograft recipients has been noted with each year of the stanford cardiac transplantation program. current 1 year survival is 67%, compared with 22% 1 year survival in the first year of our program. five factors are felt to be important in improving survival: 1 degree stringent recipient selection criteria, 2 degrees routine use of serial endomyocardial biopsies for the diagnosis of acute graft rejection, 3 degrees administration of rabbit antithymocyte globulin f ...1977331818
experimental infection of vertebrates of the pocomoke cypress swamp, maryland with keystone and jamestown canyon viruses.experimental studies were conducted to assess the susceptibility of white-tailed deer (odocoileus virginianus), gray squirrels (sciurus carolinensis), and cottontail rabbits (sylvilagus floridanus) to jamestown canyon (jc) and/or keystone (key) virus infection. viremia occurred in 5 of 6 deer inoculated with jc virus; however, all deer developed key virus neutralizing antibody. based on the observation that antibody elicited by primary infection of deer with either key or jc virus exhibited part ...1979453437
china, rest of medical world share replantation data. 1979480569
natural transmission of keystone virus to sentinel rabbits on the delmarva peninsula.domestic rabbits were exposed in the pocomoke cypress swamp from early may through october 1973, to act as sentinel indicators of keystone (key) virus transmission on the delaware-maryland-virginia (delmarva) peninsula. rabbits were bled weekly and their sera were tested for the presence of neutralizing antibody to both key and james-town canyon (jc) viruses. adult mosquito activity was monitored concurrently by cdc miniature light traps with dry ice. of 100 rabbits exposed, 20 rabbits acquired ...1978717629
the allergic theory of radiocontrast agent toxicity: demonstration of antibody activity in sera of patients suffering major radiocontrast agent reactions.an allergic, immunologic mechanism for certain adverse reactions to radiocontrast agents has been postulated on the basis of clinical and theoretical considerations. one obstacle to the acceptance of this allergic theory has been the inability to demonstrate significant antibodies with specificity for these agents. in our studies, rabbits were immunized with 4 analogues of radiocontrast agents which induced igg or ige antibodies specific for the contrast media analogues. then, to determine if an ...1976977260
occurrence of amatoxins in amanita ocreata. 19761035403
serologic observations during an outbreak of rat borne plague in the san francisco bay area of california.results of a serologic study of a plaque outbreak among rats (rattus norvegicus) and associated wild rodents are presented. bacteriologic and serologic evidence points toward mutual exchange of fleas and plaque infection between the intermingled rat and wild rodent populations. results emphasize the value of serologic methods for epizootiologic studies of plague in north american rat populations.19751097744
arbovirus surveillance in florida: wild vertebrate studies 1965-1974.wildlife species from 38 of florida's 67 counties were surveyed over a 10 year period for the presence of antibody to the five major arboviruses circulating in the state. the routine screening of 7891 sera from wild birds and mammals via the hemagglutination-inhibition (h1) test with selected reactors subjected to serum neutralization testing has 1) provided information regarding geographic distribution and seasonality of circulation of these viruses 2) identified enzootic foci of infection and ...19751152173
a survey for toxoplasma gondii antibodies in deer and other wildlife on a sheep range.blood samples were obtained from native mammals and birds on a sheep range (hopland field station) in northern california. serums were tested for antibodies to toxoplasma gondii by the indirect hemagglutination test. of 382 deer that were tested from 1964 to 1973, 77 (20%) were seropositive for t gondii. among 36 serums representing 6 species of wild carnivores (badgers, bobcats, coyotes, foxes, raccoons, and skunks), 18 (50%) were seropositive. all of the 5 bobcats tested were seropositive, wit ...19751176348
host preferences of aedes trivittatus (diptera: culicidae) in central iowa.the vertebrate host preferences of aedes trivittatus mosquitoes were studied to gain an insight into the possible hosts of trivittatus (tvt) virus (california encephalitis group) in iowa. engorged mosquitoes were collected with a malaise trap and dry ice-baited cdc miniature light traps. the origin of mosquito blood meals was determined by the capillary tube precipitin test. of 600 a. trivittatus blood meals tested, 409 (68.2%) reacted positively with anti-rabbit serum. the incidences of mosquit ...19751190374
trivittatus virus infections in wild mammals and sentinel rabbits in central iowa.a serological survey was conducted in iowa to determine the prevalence rate of california group virus antibodies in sera of several vertebrate species. serum specimens were assayed for infectivity-neutralizing antibody in a microneutralization system with baby hamster kidney cell culture. of 77 sera assayed, 21 (27%) neutralized trivittatus (tvt) virus infectivity. the antibody prevalence rate was highest for eastern cottontail rabbits inasmuch as 46% (10/22) of the serum specimens form this spe ...19751200251
studies on the epidemiology of california encephalitis in an endemic area in ohio in 1971. 19751200262
insects feeding on desert bighorn sheep, domestic rabbits, and japanese quail in the santa rosa mountains of southern california.desert bighorn sheep (ovis canadensis cremnobates), a domestic rabbit (oryctolagus cuniculus), and japanese quail (coturnix japonica) were used as bait animals to collect blood-feeding flies in an area of active blue-tongue and epizootic hemorrhagic disease virus transmission. precipitin tests were used to confirm the blood source where feasible. eight species of culicoides, members of the leptoconops kerteszi group, simulium spp., anopheles franciscanus, and stomoxys calcitrans were collected f ...19921512887
wood rats and kangaroo rats: potential reservoirs of the lyme disease spirochete in california.the etiologic agent of lyme disease, borrelia burgdorferi johnson, schmid, hyde, steigerwalt & brenner, was isolated repeatedly from dusky-footed wood rats, neotoma fuscipes baird, and california kangaroo rats, dipodomys californicus merriam, in northern california. all animals were collected in a region endemic for lyme disease but for which the natural reservoir of b. burgdorferi was unknown. similar attempts to isolate spirochetes from lizards, other species of rodents, jack rabbits, and deer ...19911875357
lagomorphs as sentinels for surveillance of borreliosis in the far western united states.brush rabbits (sylvilagus bachmani) and black-tailed jackrabbits (lepus californicus) from california (usa) were assayed for antibodies to borrelia burgdorferi, the etiologic agent of lyme borreliosis. significant antibody titers were detected in 90% (range, 67 to 100%) of brush rabbits from four of six localities, and in 90% of jackrabbits from a single locality, in northern california. one of the populations of brush rabbits that did not yield seropositive individuals inhabited an oceanic isla ...19892716099
ecology of a semi-isolated population of adult anopheles freeborni: abundance, trophic status, parity, survivorship, gonotrophic cycle length, and host selection.a population of adult anopheles freeborni near sheridan, ca was sampled daily during 13 august-7 september 1984. data on abundance, trophic status, and gonotrophic age were recorded. abundance and gonotrophic age data were analyzed to estimate daily survivorship and gonotrophic cycle length. daily survivorship for unfed mosquitoes was estimated to be 0.72 with a gonotrophic cycle of 6 days duration. daily survivorship for bloodfed mosquitoes was estimated to be 0.74 with a gonotrophic cycle of 4 ...19892774063
spirochetes in mammals and ticks (acari: ixodidae) from a focus of lyme borreliosis in california.in northern california, antibodies to borrelia burgdorferi were detected in 58 of 73 (79%), and spirochetemias in one of 26 (4%) black-tailed jackrabbits (lepus californicus californicus), by indirect and direct immunofluorescence, respectively. five species of ticks (dermacentor occidentalis, d. parumapertus, ixodes neotomae, i. pacificus, and haemaphysalis leporispalustris) were collected from rabbits. two of these species of ticks were found to contain spirochetes; two of 10 (20%) i. neotomae ...19883280837
serum antibody prevalence for herpesvirus sylvilagus, bacillus piliformis and california serogroup arboviruses in cottontail rabbits from pennsylvania.a serologic survey of 60 eastern cottontail rabbits (sylvilagus floridanus) from three counties in pennsylvania was conducted in march 1983. serum antibody prevalences for herpesvirus sylvilagus and la crosse virus (california serogroup) were less than 4%. there was no evidence of previous exposure to either jamestown canyon or snowshoe hare viruses (california serogroup). antibody to trivittatus virus (california serogroup) was found in 60% of the 20 cottontails from york county. no cottontails ...19883373643
antigenic relationships among newcastle disease virus mutants obtained from laboratory strains and from recent california isolates.the antigenic relationship between pairs of plaque mutants of newcastle disease virus (ndv) derived from laboratory strains and from isolates from the 1971-72 california epizootic were examined by kinetic neutralization test. comparing four sets of mutants from laboratory strains by both kinetic neutralization and hemagglutination inhibition tests, a similarity was found in the antigenic relationship expressed as an r value with both tests. however, kinetic neutralization was the more precise as ...19744139119
host-feeding patterns of culex tarsalis in the sacramento valley, california, with notes on other species. 19674383195
buttonwillow virus, a new arbovirus isolated from mammals and culicoides midges in kern county, california. 19704392811
california group virus infections in small, forest-dwelling mammals of wisconsin. some ecological considerations. 19714397320
california group arboviruses in florida. host-vector relations. 19714398108
experimental vector and wildlife host ranges of buttonwillow virus in kern county, california. 19724399841
absence of serological evidence of myxoma virus infection in humans exposed during an outbreak of myxomatosis. 19664381646
bordetella pertussis serotypes in a whooping cough outbreak. 19744363474
survey for the arthropod vectors and mammalian hosts of ricky mountain spotted fever and plague at fort ord, california. 19734719297
selenium accumulation in mammals exposed to contaminated california irrigation drainwater.in may 1984, 332 mammals of 10 species were collected at kesterson reservoir (san joaquin valley, merced co., ca), which had received selenium-laden irrigation drainwater, and at the nearby volta wildlife area, which had not. the study concentrated on the california vole (microtus californicus); 88 were taken at kesterson, 89 at volta. mean selenium concentrations in livers were as much as 522 times higher at kesterson. there were species-to-species differences at kesterson; higher selenium conc ...19873685946
california encephalitis virus: serological evidence of human infections in alaska. 19724402443
domesticated rabbits as indicators of california-group arbovirus activity in wisconsin: experimental studies. 19744851424
lymphosarcoma in the rabbit. a case report and general review. 19684871976
coxiella burneti in a wildlife-livestock environment. distribution of q fever in wild mammals. 19715104854
plague vector studies. i. the rate of transfer of fleas among citellus, rattus and sylvilagus under field conditions in southern california. 19715160259
studies in the epidemiology of myxomatosis in california. iv. the susceptibility of six leporid species to californian myxoma virus and the relative infectivity of their tumors for mosquitoes. 19715166039
[propagation of viruses of the california-encephalitis group in the federal republic of germany]. 19705427537
a myxoma virus epizootic in a brush rabbit population. 19724634525
california-encephalitis-group viruses in florida rabbits. report of experimental and sentinel studies. 19685676661
california virus in new york state. isolation and characterization of california encephalitis virus complex from aedes cinereus. 19695764192
some observations on ornithodoros parkeri from monterey county and its associated borrelia infection. 19655899729
arboviruses in finland. v. serological survey of antibodies against inkoo virus (california group) in human, cow, reindeer, and wildlife sera. 19734729744
a new type of chronic follicular conjunctivitis with corneal changes. 19676025164
host-feeding patterns of anopheles freeborni in the sacramento valley, california. 19676052143
arboviruses from western utah, usa, 1967-1976. 19836135808
identification of an isolate of rickettsia canada from california.a strain of rickettsia canada was recovered in 1980 an adult rabbit tick, haemaphysalis leporispalustris, taken from a black-tailed jack rabbit, lepus californicus, in mendocino county, california. in all examined biologic characteristics, this isolate, ca410, is indistinguishable from the prototype, strain 2678, isolated in ontario, canada, in 1963. these similarities include serologic and immunologic reactivity in laboratory mice and guinea pigs, cultural characteristics in vero cells, chick e ...19826756179
ground squirrel hepatitis virus infection. 19836862363
california serogroup viruses in iowa. 19836867037
survey for evidence of colorado tick fever virus outside of the known endemic area in california.a virus very similar or identical to colorado tick fever (ctf) virus was recovered from the blood clot of one of 104 black-tailed jack rabbits (lepus californicus) examined during a survey for various zoonotic agents in mammals and ticks from the university of california, hopland field station, mendocino county, california, 1974--79. this is the first reported isolation of a ctf-like virus from l. californicus, and only the second time such a virus has been found in northwestern california. mend ...19827102919
serologic evidence of jamestown canyon and keystone virus infection in vertebrates of the delmarva peninsula.serological data accumulated during the past decade indicated that a variety of feral and domestic animals of the delaware-maryland-virginia (delmarva) peninsula were infected with jamestown canyon (jc) and/or keystone (key) viruses (bunyaviridae, california serogroup). neutralizing (n) antibody to jc virus was most prevalent in white-tailed deer, sika deer, cottontail rabbits and horses. key virus n antibody was detected most frequently in gray squirrels and domestic goats. n antibody indicativ ...19827149110
ecology of tick-borne agents in california. i. spotted fever group rickettsiae. 19817212168
animal surgery: an adjunct to training in obstetrics and gynecology.a resident in obstetrics and gynecology obtains adequate experience in basic gynecologic surgery during a 3-year training program, but the technical skill acquired in surgery of the bowel, bladder, ureters, and pelvic vessels is limited by the clinical material available. a program is described in which 3 animal models (dog, rabbit, cat) were used to expand the surgical skills of gynecology residents. the increased surgical competence and professional stimulation provided the residents by this p ...19807422178
isolation and initial characterization of a newfound hantavirus from california.a fatal case of hantavirus pulmonary syndrome (hps) in northern california prompted our attempt to isolate viruses from local rodents. from tissues of two deer mice, peromyscus maniculatus, two hantaviruses (convict creek virus 107 and 74, cc107 and cc74) were established in cell culture. viral antigens, proteins, and rnas of the first and archetypical isolate (cc107) were examined, and portions of the medium (m) and small (s) genome segments of both isolates were sequenced. antigenically, cc107 ...19957856107
malaria vaccine research.in our report "activation of raf as a result of recruitment to the plasma membrane" (3 june, p. 1463) (1), panels e and f of figure 1 on page 1464 were incorrect. the correct photographs appear below. in addition, the [see figure in the pdf file] second sentence of the legend to figure 1 should have read, "the raf constructs were tagged at the cooh-terminus with a glu-glu epitope (meympme) (24) for c-raf, or at the nh(2)-terminus with both the glu-glu and the myc (meqkliseedl) (23) epitopes for ...19947864993
isolation of jamestown canyon and snowshoe hare viruses (california serogroup) from aedes mosquitoes in western massachusetts.three isolates of jamestown canyon virus and one isolate of snowshoe hare virus (california serogroup) were obtained from adult aedes females collected in western massachusetts in 1982. jamestown canyon virus was isolated from aedes abserratus/punctor once, and from aedes intrudens twice. snowshoe hare virus was isolated from aedes stimulans group mosquitoes. la crosse encephalitis (lac) virus was not isolated from 1,552 adult aedes triseriatus, nor from 22,557 aedes triseriatus larvae. however, ...19938350066
health effects of outdoor air pollution. committee of the environmental and occupational health assembly of the american thoracic society.particles, sox, and acid aerosols are a complex group of distinct pollutants that have common sources and usually covary in concentration. during the past two decades, the chemical characteristics and the geographic distribution of sulfur oxide and particulate pollution have been altered by control strategies, specifically taller stacks for power plants, put in place in response to air pollution regulations adopted in the early 1970s. while the increasing stack heights have lowered local ambient ...19968542133
ixodes (ixodes) jellisoni and i. (i.) neotomae (acari:ixodidae): descriptions of the immature stages from california.nymphal and larval stages of ixodes (ixodes) jellisoni cooley & kohls and i. (i.) neotomae cooley are described for the first time. these 2 tick species occur only in the western united states, predominantly in california. the primary host for i. jellisoni is the california kangaroo rat, dipodomys californicus (merriam); that for i. neotomae is the dusky-footed woodrat, neotoma fuscipes baird. the etiologic agent of lyme disease borrelia burgdorferi johnson, schmidt, hyde, steigerwalt & brenner ...19968667376
latex allergens in tire dust and airborne particles.the prevalence and severity of latex allergy has increased dramatically in the last 15 years due to exposure to natural rubber products. although historically this health risk has been elevated in hospital personnel and patients, a recent survey has indicated a significant potential risk for the general population. to obtain a wide-spread source for latex exposure, we have considered tire debris. we have searched for the presence of latex allergens in passenger car and truck tire tread, in debri ...19968959407
ecology of mosquitoes and lack of arbovirus activity at morro bay, san luis obispo county, california.during 1994-95, totals of 17,656 adult females and 111,104 adults reared from field-collected immatures comprising 19 species in 4 genera of mosquitoes were collected from morro bay estuary and surrounding environs in san luis obispo county, california. aedes dorsalis was the dominant summer mosquito, whereas aedes squamiger and ae. washinoi were abundant during winter and early spring. host-seeking culex tarsalis were collected infrequently, even though immatures were collected frequently from ...19969046476
population genetic structure of ixodes pacificus (acari:ixodidae) using allozymes.genetic analysis of the population structure of the western blacklegged tick, ixodes pacificus cooley & kohls, was conducted using allozymes. this vector tick transmits the lyme disease spirochete, borrelia burgdorferi johnson, schmid, hyde, steigerwalt & brenner, in the far-western united states. it ranges from british columbia to baja california and disjunct populations are present in oregon, nevada, utah, and arizona. host-seeking adult ticks were collected from vegetation across the range of ...19979220679
role of small mammals in the ecology of borrelia burgdorferi in a peri-urban park in north coastal california.the role of small mammals other than woodrats in the enzootiology of the lyme disease spirochete, borrelia burgorferi, was assessed in the peri-urban park. mammals were collected monthly from september through to april. following tick removal, the animals were tested for b. burgdorferi by culture of ear-punch biopsies. larvae and nymphs that were intermediate in morphology between ixodes spinipalpis and ixodes neotomae occurred on several species of rodents (peromyscus truei, peromyscus californ ...19979291589
isolation of porcine circovirus-like viruses from pigs with a wasting disease in the usa and europe.samples of lung, liver, kidney, pancreas, spleen, and lymph node from pigs with postweaning multisystemic wasting syndrome from california (usa) and samples of mesenteric lymph nodes from similarly diseased pigs from brittany (france) were examined by light microscopy, in situ hybridization (ish), and/or virus isolation. whole genomic probes for porcine circovirus (pcv) and chicken anemia virus (cav) were used for ish. tissue homogenate supernatants were inoculated onto pk/15 cells for virus iso ...19989526853
ecology of aedes dorsalis (diptera: culicidae) in relation to western equine encephalomyelitis virus in the coachella valley of california.the ecology of western equine encephalomyelitis virus (wee) was studies during 1994-1996 along a portion of the north shore of the salton sea in coachella valley, california, known to support a focal aedes dorsalis (meigen) population. wee was detected during 1995 by the seroconversion of sentinel chickens concurrently at sites within and outside of the area supporting ae. dorsalis. wee was not detected during 1994 or 1996; neither was wee detected by seroconversion of sentinel rabbits nor by is ...19989701945
serologic detection of adenoviral hemorrhagic disease in black-tailed deer in california.an enzyme-linked immunosorbent assay (elisa) and a serum neutralization (sn) test were developed to measure serum antibodies against the adenovirus causing hemorrhagic disease in free-ranging and captive experimentally-infected black-tailed deer (odocoilenus hemionus columbianus) in california (usa). there was a strong (rho = 0.874) and significant (p < 0.0001) correlation between elisa and sn titers, although the sn assay was more sensitive than the elisa.200010813622
vector competence of ixodes angustus (acari: ixodidae) for borrelia burgdorferi sensu stricto.the vector competence of ixodes angustus for borrelia burgdorferi sensu stricto (s.s.) was investigated in the laboratory. the larval progeny of female ticks from washington state were placed on swiss-webster mice that had been inoculated intravenously with 10(8) spirochetes each of a californian isolate of b. burgdorferi. spirochetes were detected in 6 (12%) of 50 nymphs derived from larvae that had fed on these animals. ten nymphs from the same cohort of experimentally infected ticks were plac ...200010823359
a piscirickettsia salmonis-like bacterium associated with mortality of white seabass atractoscion nobilis.mortality among hatchery-reared juvenile white seabass atractoscion nobilis in southern california, usa, was associated with infections by a piscirickettsia salmonis-like organism (wspslo). infected fish had no consistent external signs other than pale gills, lethargy and impaired swimming behavior. internally, the kidney and spleen were enlarged, and some fish had livers with multiple pale foci. smears from infected kidney, liver, and spleen stained with wright-giemsa had intracytoplasmic cocco ...200011145452
landscape affects the host-seeking patterns of culex tarsalis (diptera: culicidae) in the coachella valley of california.effective arbovirus transmission requires that the principal vertebrate hosts and vectors have frequent contact. vegetation and other landscape features used by roosting or nesting birds at night dictate their exposure to nocturnally active host-seeking culex tarsalis coquillett and therefore to western equine encephalomyelitis and st. louis encephalitis viruses. precipitin tests on 645 cx. tarsalis that were collected resting and host-seeking near the salton sea in coachella valley, ca, indicat ...200111296843
aspects of pet ownership in yolo county, california. 19744811896
data complement anti-std activity of pro 2000 gel. contraceptives.procept, cambridge, massachusetts, announced preclinical results demonstrating the contraceptive efficacy of its pro 2000 topical microbicide gel. in a program of late-breaking discoveries presented at the national conference on women and hiv, held in pasadena, california, procept scientists described the results of studies recently conducted with pro 2000. the in vitro results showed that pro 2000 was contraceptive when rabbits were dosed intravaginally with a gel containing a 4% concentratio ...199712320875
region-related risk factors for respiratory symptoms in european and californian farmers.the aim of this study was to determine the prevalences and regional risk factors for respiratory symptoms in european and californian farmers. farmers participating in the 1993-1997 surveys performed in europe (n = 7,188) and california (n = 1,839) were included in this cross-sectional study. respiratory symptoms and farming characteristics were assessed by questionnaire and risk factors associated with symptoms using logistic regression. the prevalences of rhinitis and asthma were lower in euro ...200312608449
california encephalitis. epidemiologic studies in ohio using a quantitative metabolic inhibition test. 19705458949
environmental isolation of balamuthia mandrillaris associated with a case of amebic encephalitis.this report describes the first isolation of the ameba balamuthia mandrillaris from an environmental soil sample associated with a fatal case of amebic encephalitis in a northern california child. isolation of the ameba into culture from autopsied brain tissue confirmed the presence of balamuthia: in trying to locate a possible source of infection, soil and water samples from the child's home and play areas were examined for the presence of balamuthia: the environmental samples (plated onto nonn ...200312843060
california encephalitis virus. serologic survey of small wind mammals in northern united states and southern canada and isolation of additional strains. 196314043542
california encephalitis virus: an evaluation of its continued endemic status in kern county, california. 196414215833
attenuation of the myxoma virus and use of the living attenuated virus as an immunizing agent for myxomatosis. 196414233132
necrotic arachnidism. 19665980720
a survey of intestinal parasites in domestic rabbits in six counties in southern california. 195015402950
a risk assessment of atrazine use in california: human health and ecological aspects.a risk assessment of the triazine herbicide atrazine has been conducted by first analyzing the toxicity database and subsequently estimating exposure. margins of safety (mos) were then calculated. toxicity was assessed in animal studies and exposure was estimated from occupational and dietary sources. in acute toxicity studies, atrazine caused developmental toxicity in the rabbit [no observed effect level (noel) 5 mg kg(-1) day(-1)] and cardiotoxicity in a dog chronic study (noel 0.5 mg kg(-1) d ...200515655806
spatially variable propagule pressure and herbivory influence invasion of chaparral shrubland by an exotic grass.although numerous studies have identified mechanisms that either resist or facilitate biological invasions, few studies have explicitly tested how resisting and facilitating mechanisms interact to drive invasion success. in california, usa, undisturbed mediterranean-type shrublands have resisted invasion by the perennial tussock grass cortaderia jubata. in some cases, however, this resistance has been spectacularly breached even in the absence of large-scale disturbance. i tested the hypothesis ...200616189663
adult fannia benjamini complex (diptera: muscidae) activity in southern california and use of co2 as an attractant.diurnal activity of host-seeking "canyon flies" (fannia benjamini complex) (diptera: muscidae) was determined on a warm, sunny day during their peak seasonal activity period (early july) in the coastal mountain community of la habra heights in los angeles county, california. high levels of activity persisted for several hours in the morning and evening, but peak abundance was within an hour after sunrise and an hour before sunset, when >600 flies (mainly fannia conspicua malloch) could be collec ...200616739402
the serologic prevalence of q fever (coxiella burnetii) complement-fixing antibodies in the peninsular bighorn sheep of southern california.q fever is a rare illness in the southern california desert. during the past 34 years only 6 patients have been diagnosed with the disease at the eisenhower medical center, a referral center for much of the desert and surrounding mountains. in all but 2 instances, q fever was identified in patients who have been in contact with imported domestic sheep who are brought to the desert to graze and lamb in the fall and winter. the sheep are sent back to idaho, wyoming, and montana in the spring. with ...200616896140
wild turkey (meleagris gallopavo) as a host of ixodid ticks, lice, and lyme disease spirochetes (borrelia burgdorferi sensu lato) in california state parks.rio grande wild turkeys (meleagris gallopavo intermedia) were evaluated as potential hosts of ixodid ticks, lice, and lyme disease spirochetes (borrelia burgdorferi sensu lato [s.l.]) in three state parks in sonoma county, california, usa, during 2003 and 2004. in total, 113 birds were collected, 50 (44.2%) of which were found to be infested by 361 ixodid ticks representing three species: the western black-legged tick (ixodes pacificus, n=248), the rabbit tick (haemaphysalis leporispalustris, n= ...200617255442
relatedness of cytotoxins from geographically diverse isolates of moraxella bovis.to determine whether amino acid sequence variation exists in the moraxella bovis (m. bovis) cytotoxin (mbxa) from geographically diverse m. bovis isolated in the united states, mbxa was amplified and sequenced. the mbxa deduced amino acid sequence from m. bovis originally isolated in california, washington, north carolina, and georgia, as well as reference strains of m. bovis isolated at the national animal disease laboratory, ames, ia, usa, all encoded a nearly identical 927 amino acid protein. ...200717540518
microbial source tracking in a small southern california urban watershed indicates wild animals and growth as the source of fecal bacteria.three independent microbial source tracking (mst) methods were applied to a small urban subwatershed in orange county, california. fifty-seven water samples collected over summer 2002 were analyzed for human adenovirus and enterovirus. enterococci and e. coli were isolated for antibiotic resistance analysis (ara) and for pcr identification of human- and animal-specific toxin genes, respectively. all water samples were pcr negative for human enteroviruses and e. coli human-specific toxin gene. e. ...200717589839
genetic diversity of infectious hematopoietic necrosis virus from feather river and lake oroville, california, and virulence of selected isolates for chinook salmon and rainbow trout.infectious hematopoietic necrosis virus (ihnv) is a significant pathogen of young salmonid fishes worldwide but particularly within the historical range of the pacific northwest and california. in the sacramento and san joaquin river drainages of california, ihnv outbreaks in juvenile chinook salmon oncorhynchus tshawytscha have been observed regularly at large production hatcheries, including coleman national fish hatchery (established in 1941) and feather river state fish hatchery (frh; establ ...200718333482
is hexavalent chromium carcinogenic via ingestion? a weight-of-evidence review.hexavalent chromium [cr(vi)] is recognized as a human carcinogen via inhalation, based on elevated rates of lung cancer among occupationally exposed workers in certain industries. cr(vi) is also genotoxic in bacterial and mammalian cell lines. in contrast, scientific panels in the united states and abroad have reviewed the weight of evidence (woe) and decided that the available data are insufficient to conclude that cr(vi) is an oral carcinogen. a criterion of 0.2 ppb was established by a califo ...200212028825
methicillin-resistant staphylococcus aureus skin infections from an elephant calf--san diego, california, 2008.methicillin-resistant staphylococcus aureus (mrsa) infections are a major cause of human skin and soft tissue infections in the united states. mrsa colonization and infection also have been observed in turtles, bats, seals, sheep, rabbits, rodents, cats, dogs, pigs, birds, horses, and cattle, and mrsa infections with an epidemiologic link to animal contact have been reported in veterinary personnel, pet owners, and farm animal workers. on january 29, 2008, the county of san diego health and huma ...200919265780
hematologic and biochemistry reference values for the endangered riparian brush rabbit (sylvilagus bachmani riparius).the objective of this study was to establish reference hematologic and biochemistry values for adult riparian brush rabbits (sylvilagus bachmani riparius). between february 2002 and december 2003, complete blood cell counts and serum biochemistry panels were done on blood samples collected for 252 healthy, adult riparian brush rabbits that were bred in captivity and released to the wild in the california, usa, san joaquin valley. significant differences in mean values of some analytes were found ...200919395758
production of polyclonal antibodies against pelargonium zonate spot virus coat protein expressed in escherichia coli and application for immunodiagnosis.pelargonium zonate spot virus (pzsv) is identified recently in tomato plants in the united states. to develop serological diagnostic tools for the detection of this virus, the production of good quality antibodies is a necessity. the coat protein (cp) gene of a california isolate of pzsv was cloned into a bacterial expression vector (ptriex-4 ek/lic). the plasmid ptriex-4-pzsv-cp was transformed into escherichia coli rosetta 2(de3)placi and the recombinant pzsv-cp was expressed as a fusion prote ...200919397928
human health risk assessment of endosulfan. i: toxicology and hazard identification.endosulfan is persistent in the environment and toxic to wildlife. legal mandates necessitate that a risk assessments be performed for endosulfan by the california department of pesticide regulation (cdpr) and the united states environmental protection agency (usepa). this hazard identification (hazard id) compared critical no-observed effect levels (noel) for acute, subchronic and chronic exposure intervals between the agencies. noels were discussed in light of their application to numerous exp ...201019733203
differences in prevalence of borrelia burgdorferi and anaplasma spp. infection among host-seeking dermacentor occidentalis, ixodes pacificus, and ornithodoros coriaceus ticks in northwestern california.previous studies revealed that the pacific coast tick (dermacentor occidentalis) is infected occasionally with the agents of lyme disease (borrelia burgdorferi) or human granulocytic anaplasmosis (anaplasma phagocytophilum) and that it is an inefficient experimental vector of b. burgdorferi. the relationship of the pajahuello tick (ornithodoros coriaceus) to each of these bacterial zoonotic agents has not been reported. the primary bridging vector of both bacterial zoonotic agents to humans is t ...201021359090
image cytometric validation of breast carcinoma markers (er, her2 and mib-1) using tissue microarrays: rabbit monoclonal vs. fda-approved antibodies.to use the acis iii (dako, carpinteria, california, u.s.a.) with tissue microarrays (tmas) to compare rabbit monoclonal antibodies (rmab) for er, her2, and mib-1 with fda-approved monoclonal (fmab) and polyclonal (fpab) antibodies.201021434519
biological, molecular, and serological studies of a novel strain of grapevine leafroll-associated virus 2.in california, a novel closterovirus was detected in "redglobe" grapevine, associated with graft incompatibility and given a trivial name "grapevine rootstock stem lesion associated virus (grslav)." the biological properties of the putative virus were ascertained when asymptomatic yet infected redglobe scion buds were graft-inoculated onto test plants of cabernet sauvignon propagated on 18 different rootstocks. it proved lethal on test plants growing on rootstocks 1616c, 5bb, 5c, 3309c, and 1103 ...201121487783
a proposed model of naturally occurring osteoarthritis in the domestic rabbit.osteoarthritis affects one in eight american adults over the age of 25 y and is a leading cause of chronic disability in the us. translational research to investigate treatments for this naturally occurring joint disease requires an appropriate animal model. the authors conducted a retrospective study to assess the potential of naturally occurring osteoarthritis in the domestic rabbit as a model of the human disease. analysis of radiographic images showed that the presence and severity of osteoa ...201122184086
Developing a sustainable phytomanagement strategy for excessive selenium in western United States and India.Phytomanagement technology is recognized as an inexpensive and environmental friendly strategy for managing natural-occurring selenium (Se) in soils and in poor quality waters. Multi-year field and greenhouse studies were conducted with different plant species in California, USA and Punjab, India under high Se growing conditions. Some of the plant species included; canola (Brassica napus), mustard (B. juncea), broccoli (B. oleracea), spearmint (Mentha viridis), sugarcane (Saccharum officcinarum) ...201122046761
sequence mapping of the californian msw strain of myxoma virus.partial sequence mapping of the msw californian strain of myxoma virus was performed by cloning ecori and sali restriction fragments of viral dna and sequencing the ends of these. in this way, regions of 74 msw open reading frames were sequenced and mapped onto the complete genome sequences of the related leporipoxviruses south american myxoma virus and rabbit fibroma virus to form a partial map of the msw strain. in general, gene locations and sequences were conserved between the three viruses. ...200414991443
a poxvirus of primates. i. growth of the virus in vitro and comparison with other poxviruses.a primate poxvirus (orteca) isolated from a skin lesion in a rhesus monkey (macaca mulatta) was studied along with four known poxviruses: vaccinia, monkeypox, swinepox, and yaba. it grows in established lines of monkey kidney cells at a rate intermediate between that of vaccinia and monkeypox and that of swinepox and yaba. the cytopathic effects produced by orteca virus resemble those produced by swinepox virus, although, unlike swinepox, it cannot be propagated in porcine cells. neither can ort ...197018605415
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