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effect of physical and chemical factors on pasteurella multocida bacteriophages.studied was the effect of some physical factors (temperature, ph of various values) and some chemical ones (urea, sodium citrate, sarcolysin, methylene blue, acridine orange, pyronin, crystal violet, potassium permanganate, fuchsin, tetracycline and tetraolean) on phages specifically lysing pasteurella multocida strains, having the following signature: 3, 4, 6, 22, 32, 115, 967, 1075, and c-2. all investigated phages showed signs of inactivation at 48 degrees c with a further linear dependence, ...19768867
antibacterial activity of ambodryl and benadryl. 197611202
accumulation of biologically active substances in the liver of rats following irradiation and exposure to other types of stress. 197715664
pasteurella multocida bacteriophage adsorption.studied was the adsorption of 8 strains of pasteurella multocida bacteriophages presenting three groups of phages isolated in bulgaria. with the bacteriophages of groups i and ii the adsorption in broth in the first 10 minutes amounted to 50-65%, and at the 80 the minute reached its maximum value--98-99%. with the bacteriophages of group iii adsorption started with a lower percent and by the 140th minute reached 96-97%. it was by 60 min slower as compared with the adsorption with group i and ii ...197719872
[phlegmon of the fore arm succeeding to a dog-bite : respective role of the miscellaneous bacteria involved in this mixed infection (author's transl)].the authors report a case of a severe mixed infection (phlegmon of the fore arm) succeeding to a dog bite. a complex flora has been isolated from this phlegmom : pasteurella multocida, pasteurella pneumotropica, streptococcus mitis, actinomyces sp., bacteroides melaninogenicus, and a gram- bacteria related to group ii j. the pathogeny of such diseases is discussed, dwelling in one hand on the part of synergistic development of these various germs and in the other hand on the part played by saliv ...197934886
an observation on the ph changes of haemorrhagic septicaemia alum adjuvant vaccine under different methods of preparation and storage. 197939029
inactivation of pasteurella multocida within the mouse peritoneal cavity.normal icr mice were injected intraperitoneally with 0.5 ml of thioglycollate broth or 5 x 10(8) heat-killed pasteurella multocida vaccine and the number of polymorphs, lymphocytes and macrophages in the peritoneal washout suspensions were determined at intervals up to 72 hours. the stimulated mice were challenged intraperitoneally with opsonized or unopsonized p. multocida at increasing time intervals and the rate of growth by the organisms in the washout suspension was determined up to 60 minu ...197944602
letter: yersinia enterocolitica infection and thyroid disorders. 197547471
a possible relationship between delayed hypersensitivity and cell-mediated immunity. 197547728
letter: joint infection by pasteurella multocida. 197549552
letter: joint infection by pasteurella multocida. 197551168
letter: joint infection by pasteurella multocida. 197551214
letter: thyroid-cell-membrane antibodies. 197551217
letter: joint infection by pasteurella multocida. 197551321
letter: appendicitis and mimicking conditions. 197553633
letter: joint infection by pasteurella multocida. 197553767
letter: yersinia infection with hepatitis in a physician. 197554845
[use of the phases of growth of the causative agents of plaque and pseudotuberculosis for differentiation of these microorganisms]. 197656492
protection of cattle against experimental haemorrhagic septicaemia by the capsular antigens of pasteurella multocida, types b and e.aluminum hydroxide adjuvant vaccines containing endotoxin-free capsular antigens of pasteurella multocida, types b and e, were administered to cattle. dose dependent serological responses were observed which were similar for both antigens. the immunised cattle were subjected to intravenous challenge by a virulent type e strain. all animals which received the highest vaccine dose survived and all unimmunised control animals died and a vaccine dose-response relationship was obtained. the results o ...197659379
[the cytobacteriological coloring substance bf (methylene blue and basic fuchsin)].the authors have set up a cytobacteriological colouring matter for the reading of the figured elements of liquor, urine, exudats, and trasudats. the colouring solution is steady, it colours and fixes at the same time and is composed by blue methylene and basic fuchsine. there is abready a combination of both colouring matters in wayson's formula for the bipolar colouring matter of the pasteurella pestis and in pick's and jacobson's formula to point out the intercellular neisserie.197559579
letter: pasteurella and pets. 197660666
[use of mixture of andrede and bromthymol blue indicators in microbial cultivation]. 197661331
pasteurella multocida infection: a cause of abdominal pain? 197769230
[antigenic relationships between pasteurellae and actinobacilli]. 197769357
[immunological characteristics of the antigens of the causative agents of pasteurellosis]. 197770104
dog bites and pasteurella. 197673766
[importance of the somatic and capsular antigens of p. multocida in the immunological specificity of vaccines]. 197879264
coagglutination test for identification of pasteurella multocida associated with hemorrhagic septicemia.two serogroups (b and e) of pasteurella multocida associated with hemorrhagic septicemia in cattle were differentiated by a coagglutination test with antibody-coated staphylococci. the group antigen was soluble and heat stable. it was not detectable in unencapsulated cells or their heated extracts. adsorbed onto human type o erythrocytes, it could be demonstrated by an indirect hemagglutination test with specific antiserum or by coagglutination with specific antibody-coated staphylococci. antibo ...197881214
serologic examination of the westphal-type lipopolysaccharides of pasteurella multocida.the serologic specificities of the westphal-type lipopolysaccharides from 16 serotypes of pasteurella multocida were compared with those reported for the heat-stable typing antigens in the gel diffusion precipitin test. like the heat-stable typing antigen, the westphal-type lipopolysaccharide from each of the serotypes reacted only with its homologous antiserum in 14 of the 16 serotypes. the lipopolysaccharide from type strains representing serotypes 2 and 5 reacted with either of the correspond ...197882415
selective decontamination of the digestive tract of syrian hamsters.conventional syrian hamsters colonized with aerobic gram-negative bacteria such as pasteurella pneumotropica and various enterobacteriaceae species were successfully and permanently freed from these microorganisms by oral treatment for 4 weeks with dihydrostreptomycin and 'orabase' premixed with appropriate antibiotics. concomitant oral treatment with dimetridazol for the elimination of intestinal flagellates was unsuccessful. during treatment the animals were maintained under germ-free isolatio ...197882636
[determination of antigen structures of pasteurella multocida: the preparation of vaccines].the discovery of the role played by somatic antigens of the pasteurella multocida a and d capsular types in the immunization of susceptible species makes it necessary to type the somatic antigens of the isolated strains prior to any action to induce active or passive immunity. only immunoprecipitation in gel was chosen out of the various typing techniques proposed, and a correlation was established between the capsular types (according to carter), somatic types (according to namioka) and types d ...197889055
[technic of the ring precipitation test]. 197989259
[deoxyribonucleic acids from pasteurella multocida and pasteurella haemolytica].pasteurella multocida and p. haemolytica strains contain between 1.5 and three per cent phosphorus, between nine and 14 per cent nitrogen, between two and four per cent dna, and between five and 18 per cent rna, the precise figures depending on culturing conditions. high-molecular dna may be isolated by means of bacteriolysis, using deoxycholate or dodecylsulphate and the usual steps of purification, with yield and purity differing by strains. dna with sufficient purity can be obtained from seph ...197993955
common enterobacterial antigen and onpg test in the taxonomy of the genus yersinia.the detection of the common enterobacterial antigen (kunin) in strains of y. pestis, y. pseudotuberculosis and y. enterotocolitica has brought an additional reason for separating them from the pasteurella and for their inclusion in the family enterobacteriaceae. yersinia that give a positive onpg test lack true beta-galactoridase, except when they harbour a lactose plasmid.197994001
carrier rate of pasteurella multocida in a cattle herd associated with an outbreak of haemorrhagic septicaemia in the sudan. 197898205
the causative organism of contagious equine metritis 1977: proposal for a new species to be known as haemophilus equigenitalis.the aetiological agent of contagious equine metritis (cem) has been investigated bacteriologically in a wide range of cultural and conventional biochemical tests, in the eletron microscope, for dna base composition (36.1 per cent gc), for susceptibility to various antimicrobial agents and antigenically by means of tube and slide agglutination tests. the organism is a fastidious, gramnegative, non acid-fast coccobacillus which in biochemical tests is very unreactive. in conventional tests, only t ...197899302
[leg ulcer caused by a monkey's bite].35 days following a monkey's bite, the ulcer observed showed total necrosis associated with spotted zones of necrosis due to the deep penetration of the animal's teeth. it was treated like a regular ulcer and healed within seven weeks without complications. one should keep in mind that such ulcers involve infectious episodes due to the transmission of a pathogenic human-type flora through a septic orodental milieu: pathogenic cocci; pasteurella, shigella, salmonella; polio viruses or microbial a ...197899755
[antibiotic sensitivity of the bacterial flora in hemorrhagic septicemia in carp]. 197899867
[comparative study of the bactericidal action of the body of ornithodoros papillipes ticks].experiments in vivo have shown that the ticks of ornithodoros papillipes inhibit both gram-positive and gram-negative bacteria. on gram-positive microorganisms most sensitive to bactericidal effect of ticks have turned to be micrococci, staphylococci, streptococci and bacteria of diphtheria, of gram-negative ones--bacillus coli. of gram-positive microorganisms less sensitive were listeria, of gram-negative ones--salmonellae, agents of tularemia and pseudotuberculosis. at the infection with bacte ...1978100756
[sensitivity of bordetella bronchiseptica, pasteurella multocida and mycoplasma hyorhinis strains isolated from pigs towards antibiotics and chemotherapeutic agents]. 1978100928
[detection of occult viral pancreatic necrosis infection and viral hemorrhagic septicemia in rainbow trout (s. gaerdneri) in hatcheries with consideration of structural conditions]. 1978103702
medical and surgical approach to laryngeal air sacculitis in a baboon caused by pasteurella multocida.air sacculitis was diagnosed in a chronically chaired baboon, papio anubis. pasteurella multocida was repeatedly isolated from the air sac for a period of 1 year. the condition was characterized by the continuous accumulation of either mucoserous or purulent fluid. biopsies of the air sac taken during the course of the disease initially revealed goblet cell hyperplasia. later a subepithalial mononuclear or polymorphonuclear infiltrate and necrosis was the predominate finding. medical therapy was ...1978108467
[studies on the pathogenesis of viral hemorrhagic septicemia (vrs) in the rainbow trout (salmo gairdneri). i. virological studies]. 1979109076
biochemical and serological studies on pasteurella multocida isolated from cattle in the sudan.of 42 strains of pasteurella meltocida isolated from different outbreaks of hemorrhagic septicaemia and from healthy cattle in various parts of the suden, 38 belonged to carters' type b and four to type e. the strain used for vaccine production was type e. with respect to somatic antigen determination, there was some correlation between the results of the gel diffusion and the agglutination tests as most strains reacted with 0 groups 6 antisera in both tests. however, some antigens cross-reacted ...1979110516
[hemorrhagic necrosis of the marrow in neonatal sepsis complicated by disseminated intravascular coagulation]. 1979112374
serologic study of pasteurella aerogenes sp n.the antigenic attributes of pasteurella aerogenes sp n were serologically compared with species of the genera actinobacillus and pasteurella. examination included the tube-agglutination and double-immunodiffusion techniques. the results indicated the possibility of serologically different strains of p aerogenes. antisera prepared from strains of p aerogenes also reacted well with antigens prepared from yersinia pseudotuberculosis (p pseudotuberculosis) and p pneumotropica.1979112888
[bacteriocinogenic study of bac. anthracis in vivo]. 1979113925
[experimental protective of fraction i of the plague microbe].the immunogenic properties of the freeze-dried preparation of fraction i tisolated from the culture of avirulent pasteurella pestis strain were studied in experiments on hamadryas baboons, guinea-pigs and white mice. the preparation was found to have a pronounced protective effect in hamadryas baboons and white mice, especially when the preparation was used in mixture with incomplete freund adjuvant. in hamadryas baboons resistance to infection was shown to correlate with hemagglutionation antib ...1979116458
comparison of pasteurella multocida serotyping systems.thirty-two type specific cultures used in four typing systems for serologically classifying pasteurella multocida were compared as originally described for: (1) little and lyon's plate agglutination test; (2) carter's indirect hemagglutination test, hyaluronidase decapsulation test, and acriflavine reaction; (3) namioka's plate and tube agglutination tests; and (4) heddleston's gel diffusion precipitin test. in addition, seven cultures from robert's five passive protection groups were included. ...1979118694
serotyping of pasteurella multocida isolants from poultry.a total of 607 pasteurella multocida strains were isolated in israel from turkeys, geese, and chickens. serotyping was carried out by the gel-diffusion precipitin test. the antigens were heat-stable saline extracts of the organisms, and the diagnostic sera were produced in chickens using formalinized bacterins. among 31 serotypes containing one to five antigenic factors, serotypes 1 and 3 accounted for 58.1%, 80.8%, and 88.9% isolants from turkeys, geese, and chickens, respectively. on the basis ...1979118742
studies of immunogenicity of westphal lipopolysaccharides from pasteurella multocida in mice. 1979120378
[decarboxylase activity study of pasteurella multocida].ornithine-, lysine- and arginine-decarboxylase activity of 218 p. multocida strains, isolated from birds of varying disease symptoms in bulgaria and cssr, and from pigs, rabbits and birds in cuba, ussr and cssr, was studied after the method of moller. positive ornithine decarboxylase activity was established in 211 strains, low -- in 2, and negative -- in 5 strains. low arginine decarboxylase activity was observed in 12 pasteurella strains, while in 14 -- low lysine decarboxylase activity. the p ...1979120631
the microbiological and parasitological colonisation of specified-pathogen-free mice maintained in a conventional animal house.2 groups of 44 specified-pathogen-free (spf) mice, caged in groups of 4, were housed at weaning either in isolation in a building housing conventionally-reared animals, or in contact with those animals. 4 mice from each group were examined for microbiological flora and 4 for parasites at intervals for up to 90 days after transfer. proscribed bacteria were isolated from the "in contact' group after 42 days and endoparasites were observed by 16 days and thereafter. no proscribed bacteria were isol ...1975124799
use of limulus assay to compare the biological activity of peptidoglycan and endotoxin.the gelation of a lysate prepared from the amebocytes of limulus polyphemus, the horseshoe crab, has been used to detect endotoxin-like material in clinical studies and in "in vitro" experiments. the investigation of blood samples from 54 hospitalized patients suspected of having endotoxemia, revealed a positive limulus test in 14. infections due to gram-positive organisms were not associated with positive assays. these results were in agreement with the observation that living gram-positive mic ...1975126558
efficacy of lincomycin and spectinomycin on canine pathogens.lincomycin (l), spectinomycin (s), and both (l-s) were evaluated in vitro and vivo against canine pathogens. in vitro, a wider spectrum of antimicrobial activity was achieved with l-s than with either l or s. the therapeutic effects of the antibiotics were investigated in 36 dogs inoculated with a mixture of the microbal agents. tonsillitis, conjunctivitis, laryngitis, abscess formation, and necropsy findings were measured. the l-s combination was effective for the treatment of tonsillitis, conj ...1975127073
[disinfectant aerosols in pasteurellosis in rabbits]. 1975128881
microflora of pneumonic lungs in a pig herd established by hysterectomy.mycoplasmas and other micro-organisms are recorded from a pig herd originally derived by hysterectomy. complement fixation tests were positive for mycoplasma hyopneumoniae 20 months after the first hysterectomy. following a marked increase in pneumonic lesions found at slaughter, and after modifying the culture medium m hyopneumoniae was isolated. the principal micro-organism associated with this mycoplasma was pasteurella multocida.1976130669
immune mechanism in pasteurella multocida-infected mice.various immunizing procedures were tested for their effect on the growth of pasteurella multocida in specific pathogen-free cd-1 mice. two injections with killed vaccine incorporated into freund complete adjuvant gave excellent protection against parenteral challenge, but less to control the growth of an aerogenic inoculum. protection with adjuvant-treated preparation was always superior to that seen with non-adjuvant-treated vaccines. a killed saline-suspended vaccine introduced aerogenically m ...1976131783
dictyocaulus viviparus infestation in reindeer in northern norway. a contribution to its epidemiology. 1977139821
[pathogenicity expressed by inhibition of the pasteur effect].the experiments carried out demonstrate that under the influence of tetanus exotoxin, gram-negative bacteria endotoxins, staphylococcal infection and infestation with tr. spiralis, inhibition of the pasteur effect occurs. recently published data show that the same manifestation of pathogenicity is induced by diphtheria alpha and delta exotoxin, staphylococcal toxin, pseudomonas aeruginosa exotoxin, staphylococcal enterotoxin, streptolysin o, infections with cl. perfringens, pasteurella and ricke ...1977143708
lung lysophospholipase activity in specific-pathogen-free rats infected with pasteurella pneumotropica or mycoplasma pulmonis.the effects of pasteurella pneumotropica and mycoplasma pulmonis infections in specific-pathogen-free rats were studied to determine whether or not bacterial infections could cause an increase in rat lung lysophospholipase activity and/or changes in bone marrow eosinophil levels. lung lysophospholipase activity levels of m. pulmonis-infected rats were elevated with increasing infection dosages, but enzyme levels were not accompanied by a lung tissue eosinophilia or an increase in bone marrow eos ...1978153332
[rearing of germfree rabbits and establishment of an spf rabbit colony].baby rabbits hysterectomy-derived from conventional japanese white rabbits were reared under aseptic condition by feeding with 4 types of artificial diets. rabbit milk for the artificial diet was obtained from conventional dams at 7--25 days after delivery. the artificial diets was given by stomach tube twice a day. the total volumes of diet given (ml per day) were y = 2.3x + a (1 to approximately 14 days of age), y = 32.2 + a (l5 to approximately 25 days of age), or y = (32.2 + a) - 37.5 (x - 2 ...1979155008
[outbreak of pasteurellosis among the monkeys in a zoo]. 1979160654
[establishment of a colony of japanese white rabbits free from coccidia and their breeding performance (author's transl)].a colony of rabbits free from coccidia was established in 1974 by weaning young at 25 days of age from dams infected with coccidia. until now bordetella, pasteurella and psoroptes cuniculi have not been detected either, and neither diarrhea nor death has occurred in weanlings of the colony. however, the mortality of sucklings was significantly high owing to cannibalism and tread by their dams. the weaning rate was effectively improved by use of a large nursing cage (3,100 cm2) and sterilized hay ...1979160872
[eradication of pasteurellosis from aquatic birds on farms]. 1979161675
problems on the etiological importance of pasteurella, mycoplasma and parainfluenza-3-virus in enzootic pneumonia of calves. 1975164719
investigation of factors of probable significance in the pathogenesis of pneumonic pasteurellosis in cattle.six groups of ten beef calves six to eight months of age were shipped from western canada and observed untreated for one week after arrival. the following parameters were measured daily: body temperature, plasma fibrinogen, nasal bacterial mean colony counts of pasteurella hemolytica and pasteurella multocida, total and differential leukoyte counts, packed cell volumes and the following, twice during the week: serum and nasal antibody titres to p. hemolytica and parainfluenza-3 virus. the lungs ...1975164992
characterization of "pasteurella" piscicida isolated from white perch and cultivated yellowtail.the morphological, physiological, and biochemical characteristics of twelve "pasteurella" piscicida strains isolated from white perch and yellowtail are described and the present uncertain taxonomic status of the organisms is discussed. the organisms isolated were gram-negative rods showing bipolar staining and pleomorphism. no spores or flagella were observed. they were non motile and viscid colonies were formed. growth was observed in a temperature range of 20 to 30 c and the salinity range of ...1975172679
vaccination programs for bovine respiratory diseases. 1976173981
testing veterinary vaccines. 1975174269
[changes in carbohydrate metabolism in hens experimentally infected with pasteurella multocida kokoshki].studied were the concentration of blood sugar, the activity of glucose-6-phosphatase and glucose-6-phosphatedehydrogenase, and the level of glycogen in the liver of p. multocida infected chickens. an abrupt decrease of the liver glycogen was found as well as a negligible rise of the blood sugar. the activity of glucose-6-phosphatase remained unchanged, and that of glucose-6-dehydrogenase was twice as high. it is concluded that the intense exhaustion of liver glycogen is in connection with the ac ...1975174282
pasteurella multocida septicaemia associated with chronic liver disease. 1975174776
natural infections of guinea-pigs. 1976180326
letter to the editor: prevention of experimental bovine pneumonic pasteurellosis by exposure to ibr virus. 1976181120
necropsy and laboratory findings in free-living deer in south dakota.in a diagnostic survey of diseases in wild white-tailed deer (62 cases) and mule deer (12 cases) the most common findings were traumatic injury (20%), nontraumatic hemorrhage (13%), polioencephalomalacia (11%), and bacterial infections (9%). although epizootic hemorrhagic disease was suspected in several cases, the virus was isolated from only 1 white-tailed deer.1976185186
the pulmonary clearance of pasteurella hemolytica in calves infected with bovine parainfluenza-3 virus.the purpose of this study was to determine if parainfluenza-3 virus in calves interfered with normal pulmonary bacterial clearance. three groups (a, b and c) of four calves each were exposed to an aerosol of parainfluenza-3 virus. three days later the four hour pulmonary clearance of pasteurella hemolytica was determined on the first group (a), seven days later on the second (b) and 11 days later on the third (c). group a had a mean pulmonary bacterial retention of 3.6 +/- 3.5%. group b was 83.1 ...1976187305
the use of a simple barrier system to exclude murine pathogens.a simple barrier system was used successfully to exclude mycoplasma pulmonis and sendai virus from a conventional mouse room. 49 weeks after introduction of the barrier system of management pasteurella pneumotropica was first isolated from animals in the room.1977190466
microbial agents of the owl monkey (aotus trivirgatus).a survey of the microbial flora in the owl monkey (aotus trivirgatus) has led to the isolation of numerous bacterial, fungal, and viral agents. some of the bacterial and fungal agents, particularly dermatophilus, pasteurella, salmonella, shigella, yersinia, streptococcus, staphylococcus, and candida are known pathogens. viruses belonging to the herpesvirus, adenovirus, paramyxovirus, and papovavirus groups have been isolated from the owl monkey. most of these viruses were recovered as latent age ...1976190470
porcine respiratory disease in the western cape province.the aetiology and pathogenesis of respiratory syndromes in pigs are reviewed with emphasis on the role of environmental factors and diagnosis. therapeutic and control measures are suggested and the cost of various regimens is dealt with in detail.1977195053
[comprehensive review. porcine inclusion-body rhinitis and atrophic rhinitis]. 1977200408
experimental infection of specific pathogen-free lambs with parainfluenza virus type 3 and pasteurella haemolytica. 1978207749
the effect of vaccination with a parainfluenza type 3 virus on pneumonia resulting from infection with parainfluenza type 3 virus and pasteurella haemolytica. 1978207750
concurrent infection of lambs with parainfluenza virus type 3 and pasteurella haemolytica. 1977208027
response of the respiratory tract of calves kept at controlled climatic conditions to bovine herpesvirus 1 in aerosol.seven experiments with four calves each were conducted in which the calves spent at least four days of adaptation in an environmental chamber and then were subjected to climatic stress in the form of a number of constant ambient temperature and humidity combinations. on the second day of climatic stress the calves were individually exposed to measured numbers of infectious units of bovine herpesvirus 1 (bhv1, virus of infectious bovine rhinotrachetis) in aerosol. the calves were killed seven or ...1978208734
ovine pneumonia. 1977209377
vaccination immunity to selected diseases in chickens fed the androgen analog mibolerone.chickens fed the androgen analog mibolerone during the first 7 weeks of life regress their bursa of fabricius but can be properly immunized by vaccination against avian pathogens of major economic importance such as newcastle disease virus, infectious laryngotracheitis virus, avian encephalomyelitis virus, infectious bronchitis virus, fowl pox virus, marek's disease virus, and pasteurella multocida, the pathogen causing fowl cholera. these findings on immunocompetence to infectious agents are im ...1978209430
ovine pneumonia. 1978210432
pneumonia in calves produced with aerosols of bovine herpesvirus 1 and pasteurella haemolytica.in each of 11 experiments, four calves were exposed first to an aerosol of bovine herpesvirus 1 (bhv1, virus of infectious bovine rhinotracheitis) and second to an aerosol of pasteurella haemolytica. the interval between aerosols was three to five days. in two other experiments, calves were exposed only to a bacterial aerosol. climate was controlled for all experiments from the day of viral exposure and for eight of the experiments it was also controlled for four to six days before the first aer ...1978210912
phosphatase activity of aerobic and facultative anaerobic bacteria.1115 strains of aerobic and facultatively anaerobic bacteria were tested for phosphatase activity by a conventional plate method and a microtest. the microtest was devised to allow results to be read after 4 h cultivation. phosphatase activity was found in wide range of species and strains. besides staphylococci, where the test for phosphatase is successfully used, it may be applied as one of the valuable tests for the differentiation of the following species: bacillus cereus, b. licheniformis, ...1978216188
observations on outbreaks of respiratory disease in housed calves--(2) pathological and microbiological findings.extensive pneumonic lesions were present in 42 out of 43 calves obtained for post mortem examination from 34 outbreaks of respiratory disease in northern ireland. bronchiolitis and alveolitis with necrosis of bronchiolar mucosa which progressed to bronchiolitis obliterans and peribronchiolar fibrosis were prominent histopathological features in the lungs of calves obtained live. the majority of calves which died within the first two months of these outbreaks had severe exudative bronchopneumonia ...1978217140
effect of polymyxin b sulfate on endotoxin activity in a gram-negative septicemia model.the antiendotoxin effect of polymyxin b was investigated in experimentally induced septicemia in rabbits. the pasteurella multocida organisms were sensitive to the antibacterial action of penicillin but not to polymyxin b. animals pre-treated with polymyxin showed positive blood cultures and significantly reduced plasma endotoxin levels (limulus test) with normal white blood cell and platelet counts when analyzed 6 hr after the injection of live organisms. polymyxin therapy given after the anima ...1979219410
observations on outbreaks of respiratory disease in housed calves--(1) epidemiological, clinical and microbiological findings.in 47 of 50 outbreaks of respiratory disease in indoor calves which had never been to grass there was clinical evidence of pneumonia in all animals examined. calf housing was in most cases considered unsatisfactory. virus activity was detected in 70 per cent of outbreaks investigated within a few days post onset of respiratory signs. parainfluenza (pi) 3 and respiratory syncitial virus (rsv) were the viruses most frequently involved. in the majority of outbreaks mycoplasma species and pasteurell ...1978219582
inability of passively acquired antibody to protect lambs against experimental pasteurellosis.an experimental model of pneumonic pasteurellosis in sheep was used to investigate the role of serum antibody in resistance to this disease. lambs which had been vaccinated with a sodium salicylate extract of pasteurella haemolytica type a1 were protected against challenge with pi3 virus followed by p. haemolytica type a1 7 days later. the majority of untreated lambs and lambs which had received either 200 ml of antiserum to p. haemolytica or 200 ml of control serum intraperitoneally 18 h before ...1979227797
diseases of birds of prey. 1979229616
pathology of an experimental infection of specific pathogen-free lambs with parainfluenza virus type 3 and pasteurella haemolytica. 1979231053
[changes in the antibacterial effects of organs and tissues of ornithodoros papillipes birula ticks]. 1975234572
[sialic acid in f. tularensis and f. novicida antigens].sialic acid was revealed in the antigens of virulent (503/830 and schu) and vaccine (schu-attenuated and 15-reduced) strains of f. tularensis and also in the antigens of f. novicida isolated by the treatment with trichloracetic acid, by the thiobarbiturate method of warren. its content depended on the culture virulence. sialic acid was absent in the antigens of avirulent strains of the causative agent of tularemia (503-attenuated, 15-attenuated and 21/400), but, in difference from the virulent s ...1975235820
effect of ph and haem compounds on the killing of pasteurella septica by specific antiserum.the killing of pasteurella septica by horse antiserum has features not previously associated with serum bactericidal reactions. the present work showed that lowering the ph from 7-4 to 6-8 abolished the action of antiserum. the bactericidal effect and the degradation of rna seen when antiserum is added to p. septica growing in horse serum, were abolished at ph 6-8 in much the same way as when haem compounds were added to the system. addition of chloramphenicol, rifampicin or puromycin to p. sept ...1975239094
antibiograms of pathogenic bacteria isolated from laboratory animals.study of antibiotic sensitivity patterns of 178 bacterial isolants from laboratory animals revealed that these bacteria in general were sensitive to many commonly used antibiotics; however, there were notable exceptions. this report presents current antibiotic sensitivity patterns of most gram-negative and gram-positive bacterial pathogens common to laboratory animals.1975240789
[michaelis constants of neuraminidases of pathogenic and apathogenic microorganisms (author's transl)].the km-values of neuraminidases from different pathogenic and apathogenic microorganisms have been determined on low and high molecular substrates. the substrate specificity and the affinity to the different types of substrates in relation to the pathogenicity of the microorganisms are discussed.1975241169
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