title: [ATPase and 5-nucleotidase in human breast and stomach tumors].
abstract: It has been concluded from the studies on the activity and location of ATPase and 5-nucleotidase in mammary and gastric tumours that some neoplasms of the mammary gland and stomach showing a high ATPase activity are histochemically related, in the former case, to the lobular myoepithelium and in the latter case, to non-differentiated cells of gastric glands which acquired a capacity for intestinal metaplasia and preserved it in the course of malignant transformation.  No essential changes have been recorded in the activity of 5-nucleotidase, depending on the tumour histologic structure and degree of its maturity.
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism*; D001940:Breast / Q000201:enzymology; D001943:Breast Neoplasms / Q000201:enzymology*; D002471:Cell Transformation, Neoplastic / Q000378:metabolism; D004789:Enzyme Activation; D005260:Female; D006651:Histocytochemistry; D006801:Humans; D009708:Nucleotidases / Q000378:metabolism*; D013270:Stomach / Q000201:enzymology; D013274:Stomach Neoplasms / Q000201:enzymology*
chemical_list: D009708:Nucleotidases; D000251:Adenosine Triphosphatases
vernacular_title: ATF-aza i 5-nukleotidaza v opukholiakh molochnoĭ zhelezy i zheludka cheloveka.