S-tropic murine type-C viruses: frequency of isolation from continuous cell lines, leukemia virus preparations and normal spleens.

Adenocarcinoma Adrenal Gland Neoplasms Animals Bromodeoxyuridine Cell Line/microbiology Clone Cells Connective Tissue Female Gammaretrovirus Goats/immunology Leukemia Liver/microbiology Melanoma Mice Mice, Inbred Strains Neoplasms Neoplasms, Experimental Neuroblastoma RNA-Directed DNA Polymerase Radioimmunoassay Rauscher Virus/immunology Retroviridae/isolation & purification Sarcoma 180 Spleen/microbiology Tritium Virus Cultivation

Tritium RNA-Directed DNA Polymerase Bromodeoxyuridine