title: Eleven-CIS vitamin A in the treatment of retinitis pigmentosa. A negative study.
mesh_terms: D000221:Adaptation, Ocular; D002986:Clinical Trials as Topic; D006801:Humans; D007273:Injections, Intramuscular; D007535:Isomerases / Q000627:therapeutic use; D012174:Retinitis Pigmentosa / Q000188:drug therapy*; D014794:Visual Fields; D014801:Vitamin A / Q000627:therapeutic use*
chemical_list: D014801:Vitamin A; D007535:Isomerases