stomach – anatomic : fundus, corpus or body, antrum– functional : oxyntic and pyloric gland cf) chromogranin A(CgA) : contained within neuroendocrine cells – sensitive marker for the diagnosis of neuroendocrine tumors(ex) carcinoid and gastrinoma) – bulk of “normal” blood CgA is derived from gastric ECL cells. -> Hence, elevated circulating CgA concentrations are also…