title: Humoral endorphin: a new endogenous factor with opiate-like activity.
mesh_terms: D000700:Analgesics; D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects; D001681:Biological Assay; D001921:Brain / Q000378:metabolism; D004558:Electric Stimulation; D004723:Endorphins / Q000378:metabolism* / Q000494:pharmacology; D006168:Guinea Pigs; D006801:Humans; D007082:Ileum / Q000187:drug effects / Q000502:physiology; D008297:Male; D051379:Mice; D008813:Mice, Inbred ICR; D009119:Muscle Contraction / Q000187:drug effects; D009270:Naloxone / Q000494:pharmacology; D051381:Rats; D011957:Receptors, Opioid / Q000378:metabolism*; D013574:Synaptosomes / Q000378:metabolism
chemical_list: D000700:Analgesics; D004723:Endorphins; D011957:Receptors, Opioid; D009270:Naloxone