title: Onset of labour.
mesh_terms: D000293:Adolescent; D000302:Adrenal Cortex / Q000196:embryology; D000305:Adrenal Cortex Hormones / Q000502:physiology; D000328:Adult; D000653:Amniotic Fluid / Q000502:physiology; D000818:Animals; D002417:Cattle; D004967:Estrogens / Q000502:physiology; D005260:Female; D005333:Fetus / Q000502:physiology; D012739:Gonadal Steroid Hormones / Q000502:physiology*; D006801:Humans; D007031:Hypothalamus / Q000502:physiology; D007743:Labor, Obstetric; D008875:Middle Aged; D009434:Neural Pathways; D010121:Oxytocin / Q000502:physiology; D010928:Placental Lactogen / Q000502:physiology; D011247:Pregnancy; D011374:Progesterone / Q000502:physiology; D011458:Prostaglandins E / Q000502:physiology; D011460:Prostaglandins F / Q000502:physiology; D014590:Uterine Contraction; D014599:Uterus / Q000294:innervation / Q000502:physiology
chemical_list: D000305:Adrenal Cortex Hormones; D004967:Estrogens; D012739:Gonadal Steroid Hormones; D011458:Prostaglandins E; D011460:Prostaglandins F; D011374:Progesterone; D010121:Oxytocin; D010928:Placental Lactogen