title: Second-generation drugs fight resistant virus.
mesh_terms: D000818:Animals; D019380:Anti-HIV Agents / Q000494:pharmacology*; D004352:Drug Resistance, Microbial; D015507:Drugs, Investigational / Q000494:pharmacology*; D015658:HIV Infections / Q000188:drug therapy*; D017320:HIV Protease Inhibitors / Q000494:pharmacology*; D015497:HIV-1 / Q000187:drug effects*; D006801:Humans
chemical_list: D019380:Anti-HIV Agents; D015507:Drugs, Investigational; D017320:HIV Protease Inhibitors