目的　研究细胞内吞体膜 Ｈ＋  Ａ Ｔ Ｐ酶和 Ｍｇ２ ＋  Ａ Ｔ Ｐ酶的活性。方法　在中性环境中，以铈为捕捉剂，用检测对硝基苯磷酸酶（ｐ Ｎ Ｐ Ｐ）方法对 Ｈ＋  Ａ Ｔ Ｐ酶进行了细胞化学定位， 用 Ｏｇａｗ ａ Ｍ ａｙａｈａｒａ 法对 Ｍｇ２＋  Ａ Ｔ Ｐ酶进行细胞化学定位。结果　肝细胞内吞体膜的囊泡侧均有酶活性反应颗粒。结论　提示肝细胞内吞体膜上有多种酶存在，以完成其生理功能 Objective To study the activity of endotrophin membrane H + ATP enzyme and Mg2 +  A T P enzyme. Methods Cytochemical localization of H + -ATPase was detected by using p-nitrophenylphosphatase (p-NPP) method with cerium as a capture reagent in a neutral environment. Ogaw a-Mayahara method Mg2 +  A T P enzyme for cytochemical localization. Results Hepatocyte endocytosis of the vesicle side of the enzyme-reactive particles. Conclusions suggest that there are many enzymes in liver cell endomembrane in order to complete its physiological function