title: Two additional AIDS vaccines approved for clinical trials.
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000517:prevention & control*; D002986:Clinical Trials as Topic; D015686:Gene Products, env / Q000276:immunology*; D015699:HIV Envelope Protein gp120 / Q000276:immunology*; D019302:HIV Envelope Protein gp160; D011498:Protein Precursors / Q000276:immunology*; D014765:Viral Vaccines / Q000592:standards*
chemical_list: D015686:Gene Products, env; D015699:HIV Envelope Protein gp120; D019302:HIV Envelope Protein gp160; D011498:Protein Precursors; D014765:Viral Vaccines