title: Infection fighters. Many questions, no answers.
mesh_terms: D004198:Disease Susceptibility; D015658:HIV Infections / Q000150:complications; D006801:Humans; D008219:Lymphogranuloma Venereum / Q000150:complications / Q000453:epidemiology / Q000473:pathology* / Q000635:transmission; D019966:Substance-Related Disorders