title: AIDS. Defective viruses to blame?
authors.forename: R A
authors.initials: RA
authors.lastname: Weiss
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000209:etiology*; D000818:Animals; D002415:Cats; D003673:Defective Viruses; D051379:Mice; D012192:Retroviridae Infections