title: Tretinoin in acne vulgaris.
mesh_terms: D000152:Acne Vulgaris / Q000188:drug therapy* / Q000628:therapy; D000287:Administration, Topical; D000293:Adolescent; D000328:Adult; D006801:Humans; D014212:Tretinoin / Q000008:administration & dosage / Q000627:therapeutic use*; D014801:Vitamin A / Q000031:analogs & derivatives*
chemical_list: D014801:Vitamin A; D014212:Tretinoin