title: New hope in acne.
mesh_terms: D000152:Acne Vulgaris / Q000188:drug therapy*; D000284:Administration, Oral; D000293:Adolescent; D002986:Clinical Trials as Topic; D006801:Humans; D007536:Isomerism; D014212:Tretinoin / Q000008:administration & dosage / Q000627:therapeutic use*; D014801:Vitamin A / Q000031:analogs & derivatives*
chemical_list: D014801:Vitamin A; D014212:Tretinoin