title: Oncornavirus-like particles in HeLa cells. 3. Biochemical characterization of the virus.
mesh_terms: D000956:Antigens, Viral; D001354:Avian Leukosis Virus / Q000032:analysis; D002478:Cells, Cultured; D002499:Centrifugation, Density Gradient; D004254:DNA Nucleotidyltransferases / Q000032:analysis*; D006367:HeLa Cells / Q000382:microbiology*; D006801:Humans; D007106:Immune Sera; D007074:Immunoglobulin G; D009858:Oncogenic Viruses / Q000276:immunology / Q000378:metabolism*; D012194:RNA-Directed DNA Polymerase; D012260:Ribonucleases / Q000032:analysis*; D013698:Templates, Genetic; D014316:Tritium
chemical_list: D000956:Antigens, Viral; D007106:Immune Sera; D007074:Immunoglobulin G; D014316:Tritium; D004254:DNA Nucleotidyltransferases; D012194:RNA-Directed DNA Polymerase; D012260:Ribonucleases