polypeptide hormone secreted by the mucous lining of the stomach; when peptides and amino acids are present in the small intestine the secretion of gastric acid is stimulated
例句
用作名词 (n.)
The gastrin and the glucagon cells were not found in the alimentary canal. 在胃肠道均未发现胃泌素细胞和胰高血糖素细胞。