title: RNA tumor viruses and human leukemias.
mesh_terms: D000818:Animals; D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D006801:Humans; D007938:Leukemia / Q000382:microbiology*; D009052:Leukemia Virus, Murine; D007962:Leukocytes / Q000382:microbiology; D051379:Mice; D009693:Nucleic Acid Hybridization; D012328:RNA Viruses; D012334:RNA, Neoplasm / Q000032:analysis; D012367:RNA, Viral / Q000032:analysis; D012194:RNA-Directed DNA Polymerase / Q000032:analysis; D051381:Rats; D012190:Retroviridae / Q000302:isolation & purification
chemical_list: D012334:RNA, Neoplasm; D012367:RNA, Viral; D012194:RNA-Directed DNA Polymerase