title: Plasma beta-endorphin levels during obstetrical analgesia with synthetic beta-endorphin.
mesh_terms: D000773:Anesthesia, Obstetrical; D000775:Anesthesia, Spinal; D004723:Endorphins / Q000097:blood* / Q000627:therapeutic use; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D006801:Humans; D010920:Placenta / Q000032:analysis; D011247:Pregnancy; D001615:beta-Endorphin; D008083:beta-Lipotropin / Q000097:blood
chemical_list: D004723:Endorphins; D001615:beta-Endorphin; D008083:beta-Lipotropin