title: Can microbicides prevent medical transmission in MSM?  Vaginal microbicides will be used rectally.
mesh_terms: D019380:Anti-HIV Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D000891:Anti-Infective Agents, Local / Q000008:administration & dosage / Q000627:therapeutic use*; D004333:Drug Administration Routes; D005260:Female; D015658:HIV Infections / Q000517:prevention & control* / Q000635:transmission; D018451:Homosexuality, Male; D006801:Humans; D008297:Male; D012007:Rectum; D014621:Vagina
chemical_list: D019380:Anti-HIV Agents; D000891:Anti-Infective Agents, Local