title: Effect of retinoic acid in psoriasis. II. Long term study.
mesh_terms: D001706:Biopsy; D002338:Carotenoids / Q000009:adverse effects / Q000494:pharmacology / Q000627:therapeutic use*; D006801:Humans; D007509:Irritants; D008938:Mitosis / Q000187:drug effects; D009824:Ointments; D010592:Pharmaceutic Aids; D010919:Placebos; D011565:Psoriasis / Q000188:drug therapy* / Q000473:pathology; D012867:Skin / Q000473:pathology
chemical_list: D007509:Irritants; D009824:Ointments; D010592:Pharmaceutic Aids; D010919:Placebos; D002338:Carotenoids