title: Introduction.
authors.affiliation: Tulane National Primate Research Center.
authors.forename: Ronald S
authors.initials: RS
authors.lastname: Veazey
authors.affiliation: Tulane National Primate Research Center.
authors.forename: Preston A
authors.initials: PA
authors.lastname: Marx
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000821:virology*; D000818:Animals; D004195:Disease Models, Animal; D006678:HIV / Q000502:physiology*; D006801:Humans; D011323:Primates; D016097:Simian Acquired Immunodeficiency Syndrome / Q000821:virology*; D015302:Simian Immunodeficiency Virus / Q000502:physiology*