[Pain and opioid peptides].
D001923:Brain Chemistry; D004723:Endorphins / Q000502:physiology* / Q000627:therapeutic use; D005260:Female; D006801:Humans; D007743:Labor, Obstetric / Q000187:drug effects; D009619:Nociceptors / Q000502:physiology; D010148:Intractable Pain / Q000188:drug therapy*; D011247:Pregnancy; D001615:beta-Endorphin
D004723:Endorphins; D001615:beta-Endorphin