The development of intraepithelial lymphocytes(IEL) in small intestine of 62 human fetuses aged from 10 to 38 weeks were investigated with immunohistological and stereological methods.

• 采用免疫组化和体视学测量方法,对62例10-38周人胎儿小肠上皮内淋巴细胞的数密度、平均灰度、算术平均体积及表面积与体积比进行测算,并与固有层淋巴细胞进行比较。