title: Isolation and preliminary characterization of temperature-sensitive mutants of visna virus.
mesh_terms: D003588:Cytopathogenic Effect, Viral; D005814:Genes, Viral; D005816:Genetic Complementation Test; D009154:Mutation; D012194:RNA-Directed DNA Polymerase / Q000378:metabolism; D013696:Temperature; D014790:Visna-maedi virus / Q000201:enzymology / Q000235:genetics* / Q000254:growth & development
chemical_list: D012194:RNA-Directed DNA Polymerase