## Cultures of cells from embryos of Af, C3H-Hg and (CBAT6T6 x Af)F, mice rapidly developed oncogenicity for syngeneic animals after exposure to RSV (Carr-Zilber strain). The tumours of mice were virogenic and contained the group-specific antigen of avian sarcoma-leukosis complex. However, when the
Malignant and transforming activity of rous sarcoma virus. II. The study of variants of rous sarcoma virus isolated from mouse tumours
β Scribed by I. B. Obukh; I. N. Kryukova
- Publisher
- John Wiley and Sons
- Year
- 1969
- Tongue
- French
- Weight
- 263 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0020-7136
No coin nor oath required. For personal study only.
β¦ Synopsis
Virus variants from Af mouse tumours induced by syngeneic cultured cells infected with Carr-Zilber strain of Rous sarcoma virus were studied. These variants were highly oncogenic for adult mice and golden hamsters thus differing from the original Carr-Zilber strain. The coat antigens of these viruses were not different from those of the original strain. By means of fusion with normal chicken jibroblasts an R S V variant was isolated from transformed non-malignant cultures. This virus did not differ, in its oncogenicity for adult hamsters and mice, from variants isolated from mouse turnours.
π SIMILAR VOLUMES
Tumorigenic and metastasizing activities (TGA; MA) and susceptibility, or resistance to H,O, and PGE-releasing activity (HzO: + PGE'+ phenotype) have been examined in 6 Syrian hamster embryo cell strains transformed in vitro with Rous sarcoma viruses (Schmidt-Ruppin and Prague strains). Early observ
## Abstract The increase in SβadenosylβLβmethionine decarboxylase activity in chick embryo fibroblasts after infection with Rous sarcoma virus has been studied. It has been shown that enzyme levels in transformed cells were two or three times higher than those of the nonβinfected controls. The acti
Complete Freund's adjuvant was shown to greatly stimulate viral oncogenesis both in the case of polyoma virus in niico and in the case q f Rous sarcoma virus in rats. Tumours appeared in 74 of CCS7BRIMv mice inkcred when newborn with polyoma virusadjuvant emulsion, whereas control rxiciJ injectpd wi
We recently fractionated, from the culture medium of 3T3 cells, a therrnolabile inhibitory diffusible factor (IDFN) with a molecular weight of about 40,000 daltons, which decreased nucleic acids synthesis of stimulated target 3T3 cells. In the present publication the inhibitory activities of IDFN (p