<prompt> Pepsinogen is secreted byParietal cellsMucus cellsChief cellsOxyntic cells  <response>: Chief or zymogen or peptic cells secrete pepsiongens.Parietal or oxyntic cells secrete HCl and intrinsic factor.These cells are located in the body of stomach, including the fundus.Ref: Ganong;s Review of medical physiology, 23 rd edition, page 431 