[Endorphins and opiate receptors].
D000818:Animals; D001483:Base Sequence; D002417:Cattle; D004723:Endorphins / Q000032:analysis* / Q000502:physiology; D051381:Rats; D011957:Receptors, Opioid / Q000032:analysis* / Q000502:physiology
D004723:Endorphins; D011957:Receptors, Opioid