title: Bovine visna virus and the origin of HIV.
authors.forename: M H
authors.initials: MH
authors.lastname: Lucas
authors.forename: D H
authors.initials: DH
authors.lastname: Roberts
mesh_terms: D000818:Animals; D001769:Blood / Q000382:microbiology; D002417:Cattle; D003470:Culture Media; D006678:HIV; D014790:Visna-maedi virus / Q000302:isolation & purification*
chemical_list: D003470:Culture Media