title: HIV prophylaxis still has no clear cut answer.
mesh_terms: D000225:Adenine / Q000008:administration & dosage / Q000031:analogs & derivatives; D002487:Centers for Disease Control and Prevention, U.S.; D005260:Female; D015658:HIV Infections / Q000517:prevention & control*; D006801:Humans; D009316:National Institutes of Health (U.S.); D063065:Organophosphonates / Q000008:administration & dosage; D010919:Placebos; D018894:Reverse Transcriptase Inhibitors / Q000008:administration & dosage; D012307:Risk Factors; D000068698:Tenofovir; D014481:United States
chemical_list: D063065:Organophosphonates; D010919:Placebos; D018894:Reverse Transcriptase Inhibitors; D000068698:Tenofovir; D000225:Adenine