title: Maternal factors influencing the onset of labor.
mesh_terms: D002463:Cell Membrane Permeability; D000431:Ethanol / Q000494:pharmacology; D005260:Female; D006801:Humans; D007751:Labor, Induced; D007743:Labor, Obstetric; D008564:Membrane Potentials; D010120:Oxytocics / Q000494:pharmacology; D010121:Oxytocin / Q000037:antagonists & inhibitors / Q000097:blood / Q000502:physiology; D049590:Postpartum Period; D011247:Pregnancy; D011374:Progesterone / Q000494:pharmacology / Q000502:physiology; D011453:Prostaglandins / Q000502:physiology; D012964:Sodium / Q000378:metabolism; D014599:Uterus / Q000502:physiology
chemical_list: D010120:Oxytocics; D011453:Prostaglandins; D000431:Ethanol; D011374:Progesterone; D010121:Oxytocin; D012964:Sodium