title: On the origin of RNA tumor viruses.
mesh_terms: D001435:Bacteriophages; D005075:Biological Evolution; D003673:Defective Viruses; D005796:Genes; D005827:Genetics, Microbial; D005838:Genotype; D006389:Hemagglutinins, Viral / Q000032:analysis; D008242:Lysogeny; D009858:Oncogenic Viruses / Q000145:classification / Q000254:growth & development; D014176:Protein Biosynthesis; D012328:RNA Viruses / Q000145:classification / Q000254:growth & development; D012367:RNA, Viral / Q000032:analysis; D012194:RNA-Directed DNA Polymerase / Q000032:analysis; D014158:Transcription, Genetic; D014764:Viral Proteins / Q000032:analysis; D014779:Virus Replication
chemical_list: D006389:Hemagglutinins, Viral; D012367:RNA, Viral; D014764:Viral Proteins; D012194:RNA-Directed DNA Polymerase