title: One step forwards, one step back.
authors.forename: Jeffrey D
authors.initials: JD
authors.lastname: Lifson
authors.forename: Malcolm A
authors.initials: MA
authors.lastname: Martin
mesh_terms: D016915:AIDS Vaccines / Q000008:administration & dosage / Q000276:immunology; D000818:Animals; D015658:HIV Infections / Q000276:immunology / Q000517:prevention & control; D015497:HIV-1 / Q000235:genetics / Q000276:immunology; D006801:Humans; D008253:Macaca mulatta; D009154:Mutation; D015302:Simian Immunodeficiency Virus; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology; D019444:Vaccines, DNA / Q000008:administration & dosage / Q000276:immunology
chemical_list: D016915:AIDS Vaccines; D019444:Vaccines, DNA