title: Crossing the species barrier--viruses and the origins of AIDS in perspective.
authors.affiliation: Lister Hospital, London.
authors.forename: J
authors.initials: J
authors.lastname: Seale
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000382:microbiology / Q000635:transmission*; D000818:Animals; D006801:Humans; D009975:Orthomyxoviridae / Q000235:genetics; D012190:Retroviridae / Q000235:genetics; D013045:Species Specificity; D014777:Virus Diseases / Q000382:microbiology / Q000635:transmission*