Use of 13-cis-retinoic acid in cystic acne.
D000152:Acne Vulgaris / Q000188:drug therapy*; D002986:Clinical Trials as Topic; D003560:Cysts / Q000188:drug therapy; D004311:Double-Blind Method; D006801:Humans; D015474:Isotretinoin; D008297:Male; D014212:Tretinoin / Q000009:adverse effects / Q000627:therapeutic use*
D014212:Tretinoin; D015474:Isotretinoin