Endogenous opiates: 1979(1).
D000698:Analgesia; D000818:Animals; D001833:Body Temperature Regulation / Q000187:drug effects; D004326:Drinking / Q000187:drug effects; D004361:Drug Tolerance; D004435:Eating / Q000187:drug effects; D004723:Endorphins / Q000494:pharmacology / Q000502:physiology*; D006728:Hormones / Q000502:physiology; D006801:Humans; D007858:Learning / Q000187:drug effects; D008568:Memory / Q000187:drug effects; D009043:Motor Activity / Q000187:drug effects; D011957:Receptors, Opioid / Q000502:physiology; D012559:Schizophrenia / Q000209:etiology; D013045:Species Specificity; D009435:Synaptic Transmission / Q000187:drug effects
D004723:Endorphins; D006728:Hormones; D011957:Receptors, Opioid