Opiates and acid secretion.
D000818:Animals; D002415:Cats; D004285:Dogs; D004723:Endorphins / Q000378:metabolism*; D005750:Gastric Juice / Q000187:drug effects / Q000378:metabolism*; D009294:Narcotics / Q000378:metabolism* / Q000494:pharmacology; D011957:Receptors, Opioid / Q000378:metabolism*; D013268:Stimulation, Chemical
D004723:Endorphins; D009294:Narcotics; D011957:Receptors, Opioid