Publications

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interaction of mycoplasma gallisepticum, mild strains of newcastle disease virus and infectious bronchitis virus in chickens. 19715569701
effect of tylosin on chickens infected with mycoplasma gallisepticum and the newcastle disease virus b1 strain. 19715569697
growth and survival of germfree and conventional chicks inoculated with mycoplasma gallisepticum. 19715567423
the effect of added energy on induced mycoplasma gallisepticum infection in broilers. 19715550466
pathogenesis of single and mixed infections caused by mycoplasma meleagridis and mycoplasma gallisepticum in turkey embryos. 19715541210
cottonseed oil spray for broiler houses: effects on dust control, mycoplasma gallisepticum spread and broiler performances. 19705537218
[use of the metabolic inhibition test (mi-test) for mycoplasma gallisepticum]. 19705534809
[attenuation of a strain of mycoplasma gallisepticum for vaccination against avian mycoplasmosis]. 19705534780
immunization against mycoplasma gallisepticum. 19705503019
a comparison of radiographic lesions in pelvic limbs of chickens infected with mycoplasma gallisepticum, mycoplasma synoviae, or an arthritis-producing virus. 19705503017
ultrastructure of mycoplasma gallisepticum isolate 1056. 19705494318
the ws7 strain of mycoplasma gallisepticum. 19705492102
non-specific agglutination reactions with mycoplasma gallisepticum antigens. 19705476609
contact transmission of mycoplasma gallisepticum and its prevention. 19705453399
mixed infection with mycoplasma gallisepticum and the b1 strain of newcastle disease virus in chickens. 19705453398
the development of a non-infectious carrier state in chickens infected with mycoplasma gallisepticum. 19705448138
mycoplasma synoviae and mycoplasma gallisepticum infections: differentiation by the hemagglutination-inhibition test. 19705440072
[on the therapy of avian mycoplasmosis. i. activity in vitro and in vivo of several antibiotics on mycoplasma gallisepticum]. 19695401442
mixed infection with infectious bronchitis virus and mycoplasma gallisepticum in a chicken flock. 19695392003
the effect of incubation time longer than 24 hours on mycoplasma gallisepticum serum tube agglutination test titers. 19695391209
a report on the use of a serum plate antigen for the detection of antibodies to mycoplasma gallisepticum. 19695389842
ribonucleic acids of mycoplasma gallisepticum strain a5969. 19695374527
pathogenesis of arthritis induced in chickens by mycoplasma gallisepticum. 19695371120
cell division in mycoplasma gallisepticum. 19695370993
serological response produced in chickens by three strains of mycoplasma gallisepticum. 19695369170
nature of antibody response of chickens to mycoplasma gallisepticum. 19695366356
[the effect of mycoplasma gallisepticum on the development of immunity against fowl pseudoplague]. 19695355823
a partially defined (synthetic) medium for mycoplasma gallisepticum. 19695347106
aerosol studies with avian mycoplasma. 2. infectivity of mycoplasma gallisepticum for chickens and turkeys. 19675339761
serum fraction requirements of mycoplasma gallisepticum. 19665339539
a comparative study of single and multiple respiratory infections in the chicken: single infections (with mycoplasma gallisepticum and newcastle disease virus). 19665339513
distribution of mycoplasma gallisepticum in selected tissues and organs of artificially infected turkeys. 19665339401
viability studies with mycoplasma gallisepticum under different environmental conditions. 19665339400
international reference preparation of anti-mycoplasma gallisepticum serum.the who expert committee on biological standardization requested the central veterinary laboratory, weybridge, england, to arrange a collaborative assay of material they had prepared to determine its suitability to serve as an international reference preparation of anti-mycoplasma gallisepticum serum. fourteen laboratories in eight countries performed comparative assays of the proposed reference preparation together with 3 immune sera from fowls. on the basis of the results obtained, the committ ...19715316619
investigation into rabbit infusion media for the growth of mycoplasma gallisepticum antigens for inoculation into rabbits.serum cholesterol in rabbits was elevated, by intravenous inoculation of 20% tween 80, to amounts thought to have been sufficient to support growth of mycoplasma gallisepticum when 20% of such serum was added to rabbit infusion broth.however, better growth of the organism was obtained with a supplement of 5% rabbit serum and commercial cholesterol. investigation showed that normal rabbit serum may be inhibitory, which would explain these findings. the commercial cholesterol was not antigenic.19715291753
analysis of the helical ribosome structures of mycoplasma gallisepticum.the helical ribosome structures of mycoplasma gallisepticum have been analyzed by optical diffraction and the rotational symmetry technique. the helix repeat (510 a) is composed of 10 ribosomes in 3 turns. the rotational studies show some ribosome fine structure.19715276300
serological tests for the detection of antibodies to mycoplasma gallisepticum in chickens and turkeys. 19685250132
mycoplasma gallisepticum in the respiratory tract of the fowl. 19675234294
ultrastructure and life cycle of mycoplasma gallisepticum a5969. 19675233790
mycoplasma gallisepticum--control by immunization. 19675233761
electron microscopy of mycoplasma gallisepticum and mycoplasma mycoides using the negative staining technique and their comparison with myxovirus. 19675233756
identification of the a-1 agent as mycoplasma gallisepticum. 19665230186
growth and pathogenicity studies of mycoplasma gallisepticum in chicken tracheal organ cultures. 19715167481
isolation and characterisation of mycoplasma gallisepticum from a fowl. 19715166491
effect of the newcastle disease virus tcnd strain on mycoplasma gallisepticum infection in chickens. 19715142164
oncolytic effect of a mycoplasma gallisepticum strain on solid ehrlich carcinoma. 19715136326
studies on an outbreak of mycoplasma gallisepticum infection among peafowls (pavo cristatus). 19725072745
removal of non-specific agglutination reactions by avian sera to the serum plate agglutination test for mycoplasma gallisepticum. 19725062152
cold hemagglutinin in serum of chicken infected with mycoplasma gallisepticum. 19725051902
an outbreak of synovitis caused by mycoplasma gallisepticum in chickens. 19725051901
ultrastructural characteristics of mycoplasma gallisepticum, m. gallinarum and m. meleagridis. 19725036320
[the occurrence of neuraminidase in mycoplasma gallisepticum]. 19725025772
experimental respiratory disease and airsacculitis in fowls caused by mycoplasma gallisepticum. 19725024311
the influence of ph of the culture medium on the sensitivity of mycoplasma gallisepticum antigens for use in certain serological tests.mycoplasma gallisepticum antigens were prepared from organisms cultured in broth medium with glucose. the influence of period of growth, ph of the medium and duration of incubation at low ph (5.0) on the sensitivity of these antigens was determined in certain tests. the most sensitive antigen for the serum plate test was harvested after no more than 8 hr. incubation at ph 5.0. sensitivity in serum plate, haemagglutination and gel diffusion tests was impaired if organisms were incubated at ph 5.0 ...19715002646
mycoplasma gallisepticum infection in mice and cynomolgus monkeys. a histologic, immunofluorescence, and electron microscopic study of the heart. 19684972501
role of complement in immune inactivation of mycoplasma gallisepticum.studies were undertaken to evaluate the role of complement in the interaction between mycoplasmas and antiserum. a suspension of the a-1 strain of mycoplasma gallisepticum in pplo broth was incubated at 37 c with rabbit immune serum which had been heated for 30 min at 56 c. samples were removed from the mixture at timed intervals for 1 hr for titration of the mycoplasmas in broth. when normal guinea pig serum was included in the mixture at a final dilution of 1:40, the titer fell rapidly from 10 ...19674962702
a comparative study of single and multiple respiratory infections in the chicken: multiple infections (with mycoplasma gallisepticum, newcastle disease virus, and infectious bronchitis virus). 19664961637
[studies on mycoplasma gallisepticum by polyacrylamide gel electrophoresis]. 19714942781
electron microscope studies of turkey sinus epithelial cells infected with mycoplasma gallisepticum. 19704917314
effect of lincomycin and spectinomycin water medication on chickens experimentally infected with mycoplasma gallisepticum and escherichia coli. 19694907438
a ward hemagglutinin induced in chickens by inoculation with mycoplasma gallisepticum. 19694885342
[comparative studies on fluorescent serological demonstration of mycoplasma gallisepticum inclusive of slide culture]. 19684880123
the virulence of mycoplasma gallisepticum for embryonated fowl eggs. 19734805146
[experimental mycoplasmosis in chickens. ii. pathological findings of chickens inoculated with mycoplasma gallisepticum (strain s6) by the air-sac and intravenous routes]. 19734799960
interference of mycoplasma gallisepticum with multiplication of newcastle disease virus in chicken tracheal organ cultures. 19734799666
effect of ammonia on mycoplasma gallisepticum infection in chickens. 19734792401
the effect of heat killed mycoplasma gallisepticum and m. meleagridis on plasma caeruloplasmin activity in the fowl. 19734792024
non-specific agglutination of mycoplasma gallisepticum. 19734730113
deoxyribonucleic acid synthesis in synchronously growing mycoplasma gallisepticum.early log-phase cells of mycoplasma gallisepticum a5969 were synchronized by holding in eagle minimal essential medium (mem) for 2 h. when transferred out of mem into tryptose medium, the cells exhibited synchronous growth. deoxyribonucleic acid (dna) synthesis proceeded continuously during this growth but stopped during the period of cell division. one round of dna replication was observed per cell doubling, and a unique region of dna was found to be permanently bound to the membrane.19734717510
avoidance of non-specific agglutination of mycoplasma gallisepticum by the use of a globulin-free antigen. 19734707485
distribution of a phosphoenolypyruvate-dependent sugar phosphotransferase system in mycoplasms.a survey of 10 mycoplasma strains has shown that their capacity to accumulate radioactivity from alpha-methyl-d-glucopyranoside depends on the activity of a phosphoenolpyruvate-dependent phosphotransferase system (pts), and that this system endows the organisms with a high affinity for glucose as a fermentation substrate. pts activity was found in mycoplasma gallisepticum, m. mycoides var. mycoides, and m. mycoides var. capri, but in none of the fermentative acholeplasma strains nor in some of t ...19734688137
[trial evaluation of a simple screening test for mycoplasma pneumoniae pneumonia by agglutination reaction with mycoplasma gallisepticum antigen]. 19724676769
neuraminidase activity in mycoplasma gallisepticum.the whole viable mycoplasma gallisepticum (strain tt) organisms were found to possess neuraminidase activity with a ph optimum of 5.8 on substrates such as human transferrin, human alpha(1)-glycoprotein, and rabbit serum. the enzyme operated optimally at ph 4.5 when n-acetylneuraminyl-lactose was used as the test substrate.19724673793
comparative efficiency of 4 mycoplasma gallisepticum strains as antigens in detecting heterologous infection. 19724648993
serum chemistry of chicks maintained at various environmental temperatures and inoculated with newcastle disease and mycoplasma gallisepticum. 19724645729
[influence of the composition of the culture media on the growth speed of mycoplasma gallisepticum, s6]. 19734633936
detection of cholesterol in cell membranes by use of bacterial toxins.a method is described for the detection of cholesterol in membranes from erythrocytes, mycoplasmas, and bacterial cells by a ferritin-labeling technique. membranes treated with cereolysin, a bacterial hemolysin which specifically binds to cholesterol, and then treated with ferritin-antitetanolysin, were specifically ferritin-labeled for cholesterol. a similar antigen-antibody system, streptolysin o-ferritin-antistreptolysin, was also used successfully with erythrocyte membranes. there was an une ...19724623312
effect of temperature on the growth of mycoplasma gallisepticum and on its inhibition by antiserum. 19744615128
comparison of strains of mycoplasma gallisepticum by polyacrylamide gel electrophoresis. 19744592352
metabolic and growth inhibition of mycoplasma gallisepticum by antiserum. 19734578973
tropism of mycoplasma gallisepticum for arterial walls.the fatal encephalopathy associated with m. gallisepticum strain s6 in turkey poults was completely curable by treatment with tylosin or pleuromutilin. the lesions of cerebral polyarteritis disappeared after therapy. polyarthritis developed in some birds after recovery from encephalitis. immunofluorescent studies revealed that intravenously injected organisms became localized as microcolonies within the walls of cerebral and periarticular arteries, and in the glomeruli. turkey igg deposition was ...19734576023
escherichia coli serotypes isolated from chickens infected with mycoplasma gallisepticum. 19724559444
enhanced growth of mycoplasma gallisepticum, strain 801. 19724556822
[effect of gradocycline on mycoplasma gallisepticum in experimentally infected chicks]. 19724554179
nuclease activities of mycoplasma gallisepticum as a function of culture age in different media.levels of deoxyribonuclease and ribonuclease activities in the supernatant (soluble plus ribosomes) fraction of mycoplasma gallisepticum were assayed and found to be a function of strain, nutrient, and culture age. in yeast hydrolysate-enriched broth, maximal nuclease activities occurred during exponential growth.19724550663
a new subtype of type a influenzavirus isolated from turkeys.a new subtype of avian influenzavirus a was isolated in january 1967 from an epizootic in a turkey hatchery in ontario, canada. the disease was fatal in 65 of 2 500 hens involved. virus was isolated from lung and trachea tissue of three dead turkeys. sera from convalescent birds contained antibody against the viruses isolated from the outbreak but not against other known type a avian influenzaviruses, newcastle disease virus, myxovirus yucaipa, or mycoplasma gallisepticum.the strain designated a ...19724541004
the use of microtiter hemagglutination-inhibition in mycoplasma gallisepticum testing program. 19734534737
isolation, ultrastructure and antigenicity of mycoplasma gallisepticum membranes.the cell membrane of mycoplasma gallisepticum was isolated by lysing the cells with digitonin. chemical and density-gradient analyses and electron microscopy showed the isolated membranes to be relatively free of cytoplasmic contaminants. the density of the membranes exceeded that of other mycoplasma membranes, indicating a higher protein content. small vesicular extensions seen in the sectioned membranes were interpreted as empty blebs.the isolated membranes, but not the cytoplasmic fraction, e ...19734520511
occlusion of brain capillaries by endothelial swelling in mycoplasma infections.occlusion of cerebral capillaries due to acute swelling of the endothelial cells has been demonstrated in the brains of turkeys with encephalopathy caused by mycoplasma gallisepticum (s-6 strain) infection. similar capillary lesions were seen in rats with rolling disease, caused by m. neurolyticum toxin. such lesions may be the basis of ischemic necrosis of the brain.19734514983
local immunization in chicken respiratory tract with killed mycoplasma gallisepticum vaccine. 19744474553
serological comparison of five arginine-utilizing mycoplasma species by two-dimensional immunoelectrophoresis.five arginine-utilizing, nonglycolytic mycoplasma species were compared serologically by two dimensional immunoelectrophoresis. the survey included: mycoplasma hominis, mycoplasma arthritidis, mycoplasma gateae, mycoplasma gallinarum, and three strains of mycoplasma arginini. although the m. arginini strains showed strong cross-reactions, each strain produced a different antigenic profile which was distinct and which indicated significant antigenic differences between strains. the m. arginini st ...19744473427
[possible etiological role of mycoplasma gallisepticum in viral hepatitis]. 19744465704
spiramycin- and tylosin-resistant strains of mycoplasma gallisepticum isolated from breeding chickens and pipped eggs. 19744444733
partial purification of a membrane-associated deoxyribonucleic acid complex from mycoplasma gallisepticum.a mycoplasma gallisepticum subcellular fraction (p2), which contains the deoxyribonucleic acid replication complex, can be isolated by differential centrifugation of freeze-thaw-lysed cells. the nascent deoxyribonucleic acid is released from p2 by lubrol-wx, sodium dodecyl sulfate, pronase, and deoxyribonuclease, but not by saponin, ribonuclease, phospholipase c, or high-frequency sonic treatment. sonic treatment further fractionates the cell ghost and allows partial purification, on sucrose den ...19744420960
pathogenicity of avian reovirus and its influence on the infection of mycoplasma gallisepticum in chickens. 19704318212
serology and gross lesions of turkeys inoculated with an avian influenza a virus, a paramyxovirus, and mycoplasma gallisepticum. 19704314006
mycoplasma gallisepticum in a commercial laryngotracheitis vaccine. 19674293195
an infection in chickens with a strain of mycoplasma gallisepticum of low virulence.a slow-spreading infection due to a strain of mycoplasma gallisepticum was detected serologically in a flock which remained free of clinical symptoms. the strain was shown to be tylosin resistant. serological studies indicated that vertical transmission occurred.19744277360
membrane association of the deoxyribonucleic acid growing-point region in mycoplasma gallisepticum.newly replicated deoxyribonucleic acid (dna) in mycoplasma gallisepticum a5969 is membrane associated. cells pulse-labeled 1 to 3 min with (3)h-thymidine are lysed by a freeze-thaw procedure. after brief sonic treatment to shear the dna, differential centrifugation gives a cell fraction (p2) that is enriched sevenfold for pulse-labeled dna. p2 contains 80% of the total adenosine triphosphatase activity, 65% of the total cholesterol, and morphologically intact terminal bleb structures. three to f ...19724264449
comparison of hemagglutination inhibition and serum plate agglutination tests to detect antibodies to mycoplasma gallisepticum. 19724258551
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