title: Epidural met-enkephalin (FK 33-824). A dose-effect study.
mesh_terms: D000328:Adult; D000368:Aged; D000700:Analgesics; D004305:Dose-Response Relationship, Drug; D004723:Endorphins / Q000008:administration & dosage*; D004744:Enkephalin, Methionine; D004745:Enkephalins / Q000008:administration & dosage* / Q000627:therapeutic use; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009020:Morphine / Q000627:therapeutic use; D010149:Postoperative Pain / Q000188:drug therapy*; D013997:Time Factors
chemical_list: D000700:Analgesics; D004723:Endorphins; D004745:Enkephalins; D004744:Enkephalin, Methionine; D009020:Morphine