在绒毛与隐窝的交界处存在一个分化界限,把绒毛和隐窝从机能上分开。其特殊的指征是绒毛中存在有与消化机能相关的水解酶,如蔗糖转化酶、硷性磷酸酶等,而这些酶在隐窝中是不存在的,但隐窝上皮细胞具有增生、分化的能力。这种细胞分化和生化的指征,对于研究照射后肠粘膜的活动和机能是有特殊意义的。本文测定了照射后小鼠 There is a dividing line between the villus and the crypt, which separates the villus from the crypt. The special indication is that there are digestive enzymes associated with digestive enzymes, such as sucrose invertase and alkaline phosphatase, which are not found in the crypts, but the crypt epithelial cells have proliferative and differentiation Ability. This differentiation of cells and biochemical indications are of special significance for studying the activity and function of the intestinal mucosa after irradiation. This article measured irradiated mice