There are very developed rough surfaced endoplasmic reticulums ( rer ) which was lamellar arrange in cytoplasm of acinar cells and there are much zymogen granules in cytoplasm where approach the lumen of acinus under the electron microscope 电镜下，胰腺泡细胞内有非常发达的粗面内质网，排列呈板层状，靠近腺泡腔的胞质中有许多大而圆的酶原颗粒。
