title: Retrovirus variation and evolution.
authors: McArdle Laboratory, University of Wisconsin, Madison 53706.
authors: H M
authors: HM
authors: Temin
mesh_terms: D005814:Genes, Viral / Q000502:physiology; D005822:Genetic Vectors; D009154:Mutation; D012194:RNA-Directed DNA Polymerase / Q000235:genetics; D012190:Retroviridae / Q000235:genetics*; D014779:Virus Replication / Q000235:genetics
chemical_list: D012194:RNA-Directed DNA Polymerase