[In vivo distribution of beta-endorphin].
D000818:Animals; D002417:Cattle; D004723:Endorphins / Q000378:metabolism*; D004745:Enkephalins / Q000378:metabolism; D000882:Haplorhini; D051381:Rats; D011957:Receptors, Opioid / Q000378:metabolism; D014018:Tissue Distribution
D004723:Endorphins; D004745:Enkephalins; D011957:Receptors, Opioid