Gastric epithelial cells

Gastric epithelial cells form the inner lining of the stomach and organize into gastric glands that secrete mucus, acid, and digestive enzymes. This compartment includes mucus-producing pit and neck cells, acid-secreting parietal cells, pepsinogen-producing chief cells, and enteroendocrine cells. Continuous renewal from isthmus progenitors protects the stomach wall against its harsh luminal environment.