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  • Title: [Expression of C-type oncornavirus proteins in tumors of CC57BR mice].
    Author: Bogovskii BP, Lezhneva OM.
    Journal: Biull Eksp Biol Med; 1978 Mar; 85(3):334-7. PubMed ID: 78738.
    Abstract:
    Murine endogenous oncornavirus (C-type) genome expression was investigated in methylcholanthrene-induced (MC-induced) tumours of low-leukemic CC57BR mice by means of the radioimmunodiffusion method, using the precipitating test-systems. The gs-1 antigen of murine C-type viral p30 protein and Gross leukemia virus type-specific antigen (AGLV) served as viral genome markers. The gs-1 antigen was found in the primary and continuous MC-induced sarcomas, whereas AGLV appeared only during the tumour passage. A distinct association was revealed between the quantity of p30 protein (gs-1 antigen titre) and the presence of AGLV. Simultaneously with the appearance of AGLV the gs-1 titre increased markedly and the AGLV disappearance was always accompanied by a decrease of the gs-1 titre. The data presented suggest a coordinated expression of the two investigated proteins of murine C-type endogenous oncornaviruses in the chemically-induced tumours of CC57BR mice.
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