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[mixed infection of chick embryos caused by oncogenic and infectious viruses]. 1976184626
rapid diagnosis of some avian virus diseases.direct electron microscopy was used to identify virions of infectious laryngotracheitis in lysed tracheal cells and of fowlpox in scabs and exudates from natural cases. rapid identification of avian adenovirus and infectious laryngotracheitis by gel diffusion was possible using antigens prepared by simple distilled-water lysis of infected cell cultures. precipitin lines were often visible within 5 hours.1976186012
relationship between the lesser mealworm, fowl pox, and newcastle disease virus in poultry. 1976187632
[effect of iosan and bradofen on the viruses of newcastle disease, laryngotracheitis and fowl pox].tested was the effect of the iodoform preparation iosan and the quaternary ammonium preparation bradofen against the viruses of the newcastle disease (strain la sota), laryngotracheitis (strain tsniip) and fowl pox (strain fk) in birds. the following results were obtained: 1. to a concentration of 3% (262 ppm of active iodine) and exposure of 45 min. to iosan the virus of laryngotracheitis was sensitive; that of newcastle disease perished at a conc. of 5% (525 ppm of active iodine for 15 min); a ...1976189485
transmission of avian pox from starlings to rothchild's mynahs.several wild species of birds, including starlings (sturnus vulgaris), house sparrows (passer domesticus) and pigeons (columba livia) gained access to an aviary housing rothchild's mynahs (leucospar rothchildii) and over 100 additional birds representing a variety of species. six of approximately 15 mynahs became infected with avian pox and all of them died. none of the other birds in the aviary developed lesions. pox virus was isolated from mynah facial lesions on chicken chorioallantoic membra ...197616498876
development of parthenogenetic membranes in double-yolked and injected chicken eggs.development of parthenogenetic eggs is expressed in a dark cornish stock by either membrane or embryo formation. double-yolked eggs have membranes developing in zero, one, or two yolks. the incidence of double-yolked eggs with two membranes was higher than expected when compared with the incidence of single-yolked eggs from the same hens. membrane formation was increased over that of the controls by injecting saline, ringer's solution, or ground crude membranes. yolk and membranes filtered throu ...1975166142
identification of infectious bronchitis virus by interference with the b-1 isolant of newcastle disease virus. waxing and waning of interference.the massachusetts and the connecticut types of infectious bronchitis virus (ibv) were identified by interference in embryonating chicken eggs (ece) with the production of hemagglutinin by the b-1 isolant of newcastle disease virus (ndv). this interference test appears to be specific because the above interference was eliminated by adding type-specific anti-ibv serum to the ibv-ndv system; however, interference was not detectable when fowlpox virus (fpv) and infectious laryngotracheitis virus (lt ...1975168852
the addition of fowlpox and pigeon pox vaccine to marek's vaccine for broilers.laboratory and field studies indicated that a cell-culture fowlpox vaccine was effective and safe when administered subcutaneously to day-old broiler chicks in combination with cell-associated marek's vaccine without compromising the latter. pox vaccines of chick embryo origin evaluated similarly provided excellent protection, although they caused local musculature swelling when injected into muscle rather than under the skin. no muscle swelling followed improper vaccination with the cell-cultur ...1975168854
responses of isolator-derived japanese quail and quail cell cultures to selected animal viruses.thirteen oncogenic and necrotizing animal viruses were assayed in life sciences, inc. (lsi)-specific pathogen-free japanese quail and lsi-specific pathogen-free chicken embryo cell cultures. nine viruses produced similar titers in the quail and chicken cell systems, whereas four viruses showed significantly higher titers in chickens. young japanese quail and chickens were inoculated with five selected avain viruses and maintained in stainless-steel isolators. comparable responses were noted in q ...1975172527
efficacy of turkey herpesvirus vaccine when administered simultaneously with fowl pox vaccine.the efficacy of the turkey herpesvirus (hvt) vaccine in protecting chickens challenged with virulent marek's disease (md) virus was unaffected by the presence of either the chick embryo fowl pox vaccine or fowl pox vaccine derived from cell culture. conversely the hvt vaccine did not affect the efficacy of the fowl pox vaccine in chickens challenged with pathogenic fowl pox virus. a combination of spectinomycin dihydrochloride pentahydrate and lincomycin hydrochloride monohydrate as well as spec ...1975180502
an alteration in the kinetic properties of a cholesterogenic enzyme in fowlpox virus infection. 1975237362
in vitro cellular immunity to unrelated pathogens in chickens infected with fowlpox virus.peritoneal macrophages recovered from chickens 15 to 20 days after inoculation with fowlpox virus and showing a delayed hypersensitivity reaction against fowlpox antigens demonstrated an enhanced antimicrobial effect against fowlpox virus as well as unrelated viruses and bacteria. inoculation of normal chicken macrophage cultures with fowlpox virus resulted in approximately a 200-fold increase in virus titer by 96 h, whereas the virus showed less than a fourfold increase in macrophage cultures f ...19744366915
antiviral effect of some indigenous plant extracts on vaccinia & fowl-pox viruses in chick embryo fibroblast cell culture. 19744377141
studies on fowlpox viruses. i. plaque formation of fowlpox virus on chick embryo cell culture. 19734348954
role of humoral and cell-mediated immunity on the recovery of chickens from fowlpox virus infection. 19734355425
the organization of nucleoprotein within fowlpox virus. 19714111040
multiplication of fowlpox virus in chicken embryo fibroblastic cell cultures. 19704194789
fowlpox virus: interferon production and sensitivity. 19704319922
detection of fowlpox virus antigen in tissue culture by fluorescent antibody technique. 19704323099
further studies on high molecular weight fowlpox virus dna and its hydrodynamic properties. 19704909414
passive hemagglutination test with fowlpox virus. 19704985029
the influence of ph and osmolality on fixation of the fowlpox virus core. 19705459006
[characterization of a fowlpox virus isolated from a rhinoceros]. 19704097558
accelerated plaque formation by fowlpox virus in the presence of chymotrypsin.chymotrypsin enhanced fowlpox virus plaque formation in chick embryo cell cultures. a simplified plaque assay for fowlpox virus is described. plaques were produced in 3 days when chymotrypsin was included in a serum-free fluid overlay. plaques were also produced in 5 to 6 days under an agar overlay when a medium containing fetal calf serum was employed. kinetics of plaque formation were also studied, and it was shown that fowlpox virus plaque diameters grow at a linear rate.19694905607
growth cycle of fowlpox virus and change in plaque morphology and cytopathology by contaminating mycoplasma. 19695777563
the occurrence of squalene in kipid of fowlpox virus. 19685684008
the cytotoxic effect of fowlpox virus on primary human amniotic cell cultures. 19685693349
biosynthesis of host and viral deoxyribonucleic acid during hyperplastic fowlpox infection in vivo.the synthesis of deoxyribonucleic acid (dna) during in vivo infection of chick epithelium with fowlpox virus was examined by incorporation of tritiated thymidine into the acid-insoluble fraction. the proportion of precursor incorporated into host and viral dna at various times after infection was determined by chromatography on columns of methylated albumin-kieselguhr. the first 60-hr period of infection was characterized by the synthesis of predominantly host dna, the rate of production of whic ...19684301312
the high molecular weight of the fowlpox virus genome. 19676034777
molecular weight determination of fowlpox virus dna by electron microscopy. 19676039954
physicochemical properties of fowlpox virus deoxyribonucleic acid and its anomalous infectious behavior.randall, charles c. (university of mississippi, jackson), lanelle g. gafford, richard l. soehner, and james m. hyde. physicochemical properties of fowlpox virus deoxyribonucleic acid and its anomalous infectious behavior. j. bacteriol. 91:95-100. 1966.-deoxyribonucleic acid (dna) was extracted from fowlpox virus-infected tissue, purified inclusions, and purified virus by five variations of detergent and phenol methods. phenol methods gave a poor yield, whereas detergent techniques extracted up t ...19665903115
demonstration of deoxyribonucleic acid release from fowlpox virus. 19665929759
[susceptibility of swine to fowlpox virus]. 19654288815
fine structure of the coat and nucleoid material of fowlpox virus.hyde, james m. (university of mississippi school of medicine, jackson), lanelle g. gafford, and charles c. randall. fine structure of the coat and nucleoid material of fowlpox virus. j. bacteriol. 89:1557-1569. 1965.-several morphological forms characteristic of the poxvirus group were demonstrated for fowlpox virus with neutral phosphotungstic acid (pta). viral particles (purified from viral inclusion bodies) stained with uranyl acetate (ua) and shadowed with platinum were shown to have an exte ...196514291596
composition of fowlpox virus and inclusion matrix.randall, charles c. (university of mississippi school of medicine, jackson), lanelle g. gafford, robert w. darlington, and james m. hyde. composition of fowlpox virus and inclusion matrix. j. bacteriol. 87:939-944. 1964.-inclusion bodies of fowlpox virus infection are especially favorable starting material for the isolation of virus and inclusion matrix. electron micrographs of viral particles and matrix indicated a high degree of purification. density-gradient centrifugation of virus in cesium ...196414137634
unusual properties of fowlpox virus dna. 196313980045
studies on amino acid incorporation into protein of tumors induced by rous sarcoma virus and hyperplasia induced by fowl pox virus in chorioallantoic membrane of chicken embryos. 196314082876
bases of the nucleic acid of fowlpox virus and host deoxyribonucleic acid.randall, charles c. (university of mississippi school of medicine, jackson), lanelle g. gafford, and robert w. darlington. bases of the nucleic acid of fowlpox virus and host deoxyribonucleic acid. j. bacteriol. 83:1037-1041. 1962.-the nucleic acid of fowlpox virus obtained from purified inclusions was identified as deoxyribonucleic acid (dna). the base ratios determined on whole virus and on isolated dna were practically identical. the molar ratios of purines to pyrimidines were approximately u ...196214490218
quantitative changes in lipid composition of tissues infected with fowlpox virus. 195813554544
[multiplication of fowlpox virus in tissue culture]. 195613361421
studies on the combined effects of fowl pox virus and methylcholanthrene in chickens. 195212977000
[not available]. 194818123406
the behavior of pox viruses in the respiratory tract : iv. the nasal instillation of fowl pox virus in chickens and in mice.fowl pox virus from active skin lesions was established in the upper respiratory tract of normal chickens by nasal instillation and maintained for 12 successive passages. the nasal infection was not communicable by direct contact but did afford protection, for at least 6 weeks, against subsequent development of the virus in the skin. multiplication of the virus in the nasal passages was only irregularly attended by specific mucosal changes and was not accompanied by the vigorous counter-reaction ...194119871128
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