title: The negative (?) factor of HIV and SIV.
authors.affiliation: German Primate Center, Department of Virology and Immunology, Goettingen.
authors.forename: F
authors.initials: F
authors.lastname: Kirchhoff
authors.forename: G
authors.initials: G
authors.lastname: Hunsmann
mesh_terms: D015967:Gene Expression Regulation, Viral / Q000502:physiology; D015754:Genes, nef / Q000502:physiology*; D006678:HIV / Q000472:pathogenicity / Q000502:physiology*; D015302:Simian Immunodeficiency Virus / Q000472:pathogenicity / Q000502:physiology*