Endorphins, brain peptides that act like opiates.
D000595:Amino Acid Sequence; D000698:Analgesia; D000818:Animals; D001923:Brain Chemistry; D004361:Drug Tolerance; D006801:Humans; D009270:Naloxone / Q000494:pharmacology; D010455:Peptides / Q000378:metabolism / Q000494:pharmacology*; D051381:Rats; D011957:Receptors, Opioid; D008083:beta-Lipotropin
D010455:Peptides; D011957:Receptors, Opioid; D009270:Naloxone; D008083:beta-Lipotropin