Endogenous morphines and pain control.
D000698:Analgesia; D000818:Animals; D004723:Endorphins / Q000037:antagonists & inhibitors / Q000502:physiology*; D004745:Enkephalins / Q000502:physiology; D006801:Humans; D009270:Naloxone / Q000494:pharmacology; D018377:Neurotransmitter Agents / Q000502:physiology; D010146:Pain; D011957:Receptors, Opioid / Q000187:drug effects / Q000502:physiology
D004723:Endorphins; D004745:Enkephalins; D018377:Neurotransmitter Agents; D011957:Receptors, Opioid; D009270:Naloxone