title: Introduction.
authors.affiliation: Tulane National Primate Research Center, Covington, LA, USA.
authors.forename: Ronald S
authors.initials: RS
authors.lastname: Veazey
authors.forename: Preston A
authors.initials: PA
authors.lastname: Marx
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control / Q000821:virology; D000818:Animals; D004195:Disease Models, Animal; D006678:HIV / Q000502:physiology*; D015658:HIV Infections / Q000517:prevention & control / Q000821:virology; D000882:Haplorhini; D006801:Humans