title: The brain's opium (human beta-endorphin)
mesh_terms: D000818:Animals; D001921:Brain / Q000502:physiology*; D004723:Endorphins / Q000502:physiology*; D004745:Enkephalins / Q000502:physiology; D006801:Humans; D010146:Pain / Q000503:physiopathology; D010902:Pituitary Gland / Q000502:physiology; D051381:Rats; D011957:Receptors, Opioid / Q000502:physiology; D001615:beta-Endorphin
chemical_list: D004723:Endorphins; D004745:Enkephalins; D011957:Receptors, Opioid; D001615:beta-Endorphin