用免疫细胞化学方法,观察妊娠各期胎儿胃肠组织可识别内分泌细胞的分布和发育过程以及何时达到成人水平。 结果如下:①嗜铬粒蛋白:早期(8～12周)样本小肠近端(平均49,7～78细胞/mm粘膜上皮)和结肠/直肠远端(平均57,3～86细胞/mm粘膜上皮)有大量免疫反应细胞。到第二期(第二个三月 Immunocytochemistry was used to observe the distribution and development of endocrine cells in fetal gastrointestinal tissues during pregnancy and when they reached the adult level. The results were as follows: ① Chromogranin: Early (8 to 12 weeks) samples had a small intestinal proximal (average 49,7 to 78 cells / mm mucosal epithelium) and colon / rectal distal (average 57,3 to 86 cells / mm mucosal Epithelial) have a large number of immune response cells. To the second period (second March