1.(3) ductuli epididymis with least and pilus on the epidermis and (4) circular ductus epididymidis with least cutaway.

1.③附管：管径最，上皮有纤毛；④附管：切面最少，管腔圆。

2.Abstract： Aim:To establish the methods of microfertilization and explore the fertilizing potential of mouse sperm obtained from caput epididymidis and cauda epididymidis.

2.摘 要： 目的:建立显微受的方法，并探讨鼠附显微注射进入卵母细胞后的受能力。