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studies in ultrafiltration.we are submitting this series of experiments as observed facts, realizing that there are so many uncertainties in this form of indirect observation that great caution must be exercised in drawing conclusions of any kind. the most serious of the possible errors involved is that the active substances which we have studied, the enzyme-the bacteriophage-and the several varieties of virus, may not be free in our suspensions, but are adsorbed to larger particles. the peculiar difficulties encountered ...192719869343
development by ducks of natural neutralizing antibodies for a duck variant of the rous sarcoma virus. 194321434126
application of chromatography to segregation studies of the agent of chicken tumor i (rous sarcoma virus). 194817779207
the infection of cells in tissue culture with rous sarcoma virus. 195214939030
chemotherapeutic investigations with rous sarcoma virus. 195214954126
studies in avian neoplasia. i. a quantitative evaluation of neutralizing antibodies for the rous sarcoma virus in avian serums. 195212976640
[favorable action of total anterior pituitary extract on the receptivity of the hen to rous sarcoma virus]. 195313082239
protecting action of citrate on the agent of chicken tumor i (rous sarcoma virus) during roentgen radiation in vitro. 195313097130
stable standard preparations of the rous sarcoma virus preserved by freezing and storage at low temperatures. 195413233886
the density of the rous sarcoma virus in sucrose solutions. 195413233887
the sedimentation of the rous sarcoma virus. 195413233888
biological studies on the rous sarcoma virus. i. general introduction. ii. review of sources of experimental variation and of methods for their control. 195513243128
biological studies on the rous sarcoma virus. iii. the recovery of virus from experimental tumors in relation to initiating dose. 195513243129
infection of chicks by intranasal route with rous sarcoma virus. 195513254786
rous sarcoma virus infection in the chick embryo. i. pathogenesis of the rous sarcoma virus infection in the chick embryo with particular emphasis on the hemorrhagic disease. 195513284469
rous sarcoma virus infection in the chick embryo. ii. a method of measuring virus activity and neutralizing antibody. 195513284470
the cytopathogenic effect of the rous sarcoma virus on chicken fibroblasts in tissue cultures. 195513284471
biological studies on the rous sarcoma virus. iv. interpretation of tumor-response data involving one inculation site per chicken. 195613286702
the brain of newly hatched chicks as a host-virus system for biological studies on the rous sarcoma virus (rsv). 195613286703
biological studies on the rous sarcoma virus. v. preparation of improved standard lots of the virus for use in quantitative investigations. 195613286704
modification of tumor-response to rous sarcoma virus (rsv) by hydrocortisone. 195613297724
an analysis of the apparent neutralization of rous sarcoma virus with antiserum to normal chick tissues. 195613352779
the effect of malnutrition on the susceptibility of the host to viral infection.the effect of progressive long term dietary protein depletion on viral susceptibility was investigated in 2 host-virus systems: (1) swine influenza in the male cf(1) mouse, and (2) rous sarcoma virus in the new hampshire red chicken. data are presented demonstrating a relationship between host protein nutrition and susceptibility to virus infection. this relationship is shown to be cyclic in character, involving phases of increased and decreased viral susceptibility. the relative resistance of t ...195613367338
discrete foci of altered chicken embryo cells associated with rous sarcoma virus in tissue culture. 195613392529
growth curve of rous sarcoma virus and relationship of infecting dose to yield of virus in chick brain. 195713416905
inhibition of rous sarcoma virus activity by oxidized tumor lipides. 195713416906
nonviral tumors produced in turkeys by rous sarcoma virus. 195713421665
improved pock counting method for the titration of rous sarcoma virus in embryonated eggs. 195713475257
rous sarcoma virus; the purification problem. 195713488296
electron micrography of rous sarcoma virus preparations. 195713488297
development of multiple cysts and of haemorrhagic affections of internal organs in albino rats treated during the embryonic or new-born period with rous sarcoma virus. 195713493500
hemorrhagic disease and unusual hepatic lesions associated with intracerebral passage of rous sarcoma virus in chicks. 195713502705
biological studies on the rous sarcoma virus. vi. variability of recoverable virus from tumors propagated by cell transplantation. 195713502751
[intracerebral passage of the rous sarcoma virus in the newborn chick]. 195713510906
further studies on the utility of the rous sarcoma virus for the detection of antiviral activity. 195713521922
[development of multiple cysts in rats after injection of rous sarcoma virus]. 195713530840
the pathogenicity of rous sarcoma virus for mammals; multiple cysts and haemorrhagic lesions of internal organs in white rats after inoculation with rous virus during the embryonic or newborn period. 195813533027
quantitative studies on rous sarcoma virus. ii. mechanism of resistance of chick embryos to chorio-allantoic inoculation of rous sarcoma virus. 195813539627
relationship between infectivity and the ribonucleic acid content of partially purified rous sarcoma virus preparations. 195813546526
absence of neutralization of rous sarcoma virus by antinormal-chicken-embryo serum and complement. 195813549980
quantitative studies on rous sarcoma virus. iii virus multiplication and cellular response following infection of the chorioallantoic membrane of the chick embryo. 195813557730
characteristics of an assay for rous sarcoma virus and rous sarcoma cells in tissue culture. 195813616179
infection with the rous sarcoma virus in vitro. 195813619763
effect of certain fatty acids on rous sarcoma virus. 195813620123
quantitative studies on rous sarcoma virus. i. the titration of rous sarcoma virus on the chorio-allantoic membrane of the chick embryo. 195813502777
the utility of the rous sarcoma virus for detection of antiviral activity. 195824544676
studies on the mechanism of induction of neoplasia by rous sarcoma virus. 195914434917
infection of chick cells with rous sarcoma virus in vitro. 195914425958
quantitative studies on rous sarcoma virus. iv. an investigation of the nature of "noninfective" tumors induced by low doses of virus. 195914434914
zone electrophoresis of rous sarcoma virus. 195913622746
tissue distribution of the rous sarcoma virus during the incubation period. 195913638976
factors contributing to production of virus-free tumors in turkeys by rous sarcoma virus.virus-neutralizing factors in tumor extracts and sera, age of the tumor, and the infecting dose of virus are important factors contributing to the infective titer of tumor tissue. tumors produced with small amounts of virus may contain no demonstrable infective virus, and detectable inhibitory factors may or may not be present in tumor extracts or sera.195913646635
antibody response to rous sarcoma virus. 195913659438
reliability of titration of rous sarcoma virus by the count of the pocks produced on the egg chorioallantoic membrane. 195913669323
growth curve of rous sarcoma virus on chick embryo cells in vitro. 195913669324
a kinetic study of infection of chick embryo cells in vitro by rous sarcoma virus. 195913669338
the formation of muscle and muscle-like elements in the choriollantoic membrane following inoculation of a mixture of cardiac microsomes and rous sarcoma virus. 195913725558
[inactivation in vitro of the rous sarcoma virus by an isolated mucopolysaccharide of the sarcoma ascites]. 195913850616
[quantitative study of the cellular modifications induced by rous sarcoma virus in cultures of chick embryonic cells]. 195913850617
influence of iodine value, carbon number and oxidation on inhibitory activity of unsaturated fatty acids on rous sarcoma virus. 195913832534
the control of cellular morphology in embryonic cells infected with rous sarcoma virus in vitro. 196013837371
genetic response of inbred lines of chickens to rous sarcoma virus. 196013843076
attempts to extract infective nucleic acid of rous sarcoma virus. 196013783840
quantitative studies of the relationships between infecting dose of rous sarcoma virus, antiviral immune response, and tumor growth in chickens. 196013817807
infection of chick iris epithelium with the rous sarcoma virus in vitro. 196013820464
the pathogenicity of rous sarcoma virus for mammals; detection of virus and of antigenic substances of rous sarcoma in the cyst-haemorrhagic disease of albino rats. 196013854988
the suppression of morphological alterations in cells infected with rous sarcoma virus. 196013744356
[morphological transformations due to intracerebral injections of rous sarcoma virus in the newborn chick. electronmicroscopy study]. 196013745077
[observations on hemorrhagic disease in rats caused by rous sarcoma virus. 3]. 196013754410
cellular localization of rous sarcoma virus as studied with fluorescent antibody.a study has been made of the immunospecific, apple-green staining patterns imparted by fluorescent antibody to rous virus in frozen sections of wing tumors produced in young chickens by various initiating doses of virus. variations in the cellular site (cytoplasm, cell membrane, and nucleus), the distribution (particulate or homogeneous), and the quantity (little or much) of rous viral antigens were seen. the per cent of sarcoma cells containing viral antigens was related to the tumor initiating ...196013769267
development of rous sarcoma virus antigens in cultured chick embryo cells. 196013729854
importance of the infecting dose on growth patterns of rous sarcoma virus (rsv) in chick brain. 196013739819
growth inhibition of chick-embryo cells by some 5-fluorinated pyrimidines: effect on rous sarcoma virus infection. 196013741248
a study of the rous sarcoma virus by density gradient centrifugation. 196013696321
quantitative studies on rous sarcoma virus. v. an analysis of the mechanism of virulence of the bryan "high titer" strain of rsv. 196014434915
quantitative studies on rous sarcoma virus. vi. clonal analysis of in vitro infections. 196014434916
studies on noninfective tumors produced in turkeys by rous sarcoma virus. 196014436503
growth of rous sarcoma virus in chick embryo cells following irradiation of host cells or free virus. 196014439881
effects of anti-rous sarcoma virus sera on a hemorrhagic disease of rats. 196014440449
[ultrastructure of rous sarcoma virus cultivated in vitro]. 196014398836
demonstration of the intracellular location of rous sarcoma virus antigen by fluorescein-labeled antiserums. 196014420395
a virus in chick embryos which induces resistance in vitro to infection with rous sarcoma virus. 196016590722
critical factors in successful recovery of rous sarcoma virus from turkey tumors.studies of tumor cell cultures with antiviral antibody showed that most of the cell-associated virus and viral antigen were found at the cell membrane and were thus accessible to the effect of neutralizing antibody. humoral antibody present in tumor tissue neutralized cell-associated virus in vivo and thus rendered the tumor cells temporarily noninfectious. when these cells were grown in vitro in the absence of antibody, virus eventually reappeared. however, the time of reappearance, amount of v ...196117818717
the infection of chickembryo fibroblasts in suspension culture by the rous sarcoma virus. 196114454977
glucose metabolism of tumors induced by rous sarcoma virus. iii. carbohydrate metabolic enzymes in rous sarcoma. 196114040198
comparative studies in rous sarcoma with virus, tumor cells, and chick embryo cells transformed in vitro by virus : i. production of mucopolysaccharides.the chick embryo fibroblast infected by rous sarcoma virus in vitro acquires the capacity to produce the acid mucopolysaccharides which are found in the tumors caused by this virus and which are also produced by tumor cells in vitro. the transformed cell acquires synthetic as well as morphologic, metabolic, and proliferative properties characteristic of rous sarcoma tumor cells in vivo and in vitro and the transformed cell may be analogous to the tumor cell produced by virus infection in vivo.196119867193
a simple method for the preparation of potent chicken anti-rous sarcoma virus serum. 196113699613
growth of rous sarcoma virus and cells in nonconfluent chick embryo monolayers. 196113706479
[inhibition of the development of the rous sarcoma virus by 5-fluorouracil in tissue culture]. 196113706480
heat inactivation of rous sarcoma virus. 196113724053
the nature of a virus-induced cellular resistance to rous sarcoma virus. 196113744355
rous sarcoma virus associated with parthenogenesis in turkey eggs. 196113730881
dissemination of rous sarcoma virus as a cause of "metastases". 196113726847
occurrence of visceral lymphomatosis in chickens inoculated with rous sarcoma virus. 196113689133
the properties of rous sarcoma virus purified by density gradient centrifugation. 196113696318
malignancy in vivo of chick embryo cells infected with rous sarcoma virus in vitro. 196113772579
mixed infection with two types of rous sarcoma virus. 196113775833
[research on rous sarcoma virus passaged serially in eggs]. 196113781258
localization of infectious virus and viral antigen in chick fibroblasts during successive stages of infection with rous sarcoma virus. 196113781861
mode of inheritance of resistance to rous sarcoma virus in chickens. 196113783370
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