AbstractAIM To study on the gastrin-releasing peptide (GRP) cells in the mucosas of gastric antrum and duodenum immunocytochemically, and evaluate the quality of double PAP method.

• 目的 研究胃窦及十二指肠粘膜中促胃液素释放肽(GRP)细胞的免疫细胞化学染色方法，并评价其效果。