Letters: What is physiological?
D004947:Esophagus / Q000187:drug effects / Q000502:physiology*; D005750:Gastric Juice / Q000378:metabolism*; D005755:Gastrins / Q000008:administration & dosage / Q000097:blood / Q000494:pharmacology*; D006801:Humans; D007275:Injections, Intravenous; D013268:Stimulation, Chemical
D005755:Gastrins