E. S. Zalmanzon

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The induction of mutations to the 6-mercaptopurine resistance has been studied in Chinese hamster cells after transfection with highly oncogenic bovine adenovirus type 3 DNA (BAV-3). A statistically significant increase in the yield of resistant mutants is induced by viral DNA after two days expression time. The value of induction varies from 56,12 X 10(-5)(More)
Seven cloned hybrid cell lines were obtained by fusion of OAV2a GFRT cells with lymphocytes of syngeneic rats. Three of the cell lines showed a reduced malignity when injected subcutaneously and were incapable of infiltrative growth when injected intraperitoneally. They were partially or totally devoid of colony forming activity in soft agar. Tumors which(More)
The comparative study of the dynamics of the main antigen (hexon) and viral DNA of the bovine adenovirus type 3 accumulation in the established cell line MDBK under the conditions of single- or multistep cycle of infection has been undertaken. The quantitative immunoelectrophoresis and immunoenzyme assay detected the viral antigens on the late stages of(More)
Cloned cultures of rat embryo cells transformed by BA-3 DNA and those transformed by the virus in hamsters were obtained. It was found that these cultures contain T-antigen and do not differ in oncogenicity for hosts. The adenovirus type 5 DNA transformed cells of the same primary culture of rat embryo fibroblasts produced no tumors in syngeneic newborn(More)
Transcription of the human adenovirus 5 genome in transformed rat embryo cells (DFK3) was investigated using two different approaches. Preferential digestion of transcribed viral sequences by DNase I was analysed using kinetics of renaturation of 32P-labeled Ad5 HpaI restriction fragments in the presence of material which was stable after nuclease(More)