Chief cells make and secrete pepsinogen. 主细胞制造和分泌胃蛋白酶原。
Tight junctions between adjacent principal cells permit the formation of a specific microenvironment in the lumen of the epididymis that is essential for sperm maturation. 主细胞之间的紧密连接将附睾管腔形成一个特殊的微环境以促进精子成熟。