Beta-endorphins in labor.
D004723:Endorphins / Q000097:blood*; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D006801:Humans; D007743:Labor, Obstetric; D049590:Postpartum Period; D011247:Pregnancy; D001615:beta-Endorphin
D004723:Endorphins; D001615:beta-Endorphin