Raison d'être of hydrochloric acid secretion by stomach.
D004068:Digestive System Physiological Phenomena; D005260:Female; D005750:Gastric Juice / Q000502:physiology*; D006801:Humans; D006851:Hydrochloric Acid / Q000502:physiology*; D008297:Male; D013270:Stomach / Q000502:physiology*
D006851:Hydrochloric Acid