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[Quantitative histoenzymologic characteristics of the human submandibular salivary glands].

Quantitative activity of oxidative-reductive and hydrolytic enzymes obtained during operation was investigated in different parts of the human submandibular salivary glands. Quantitative estimation of enzymic activity was done by photometry of the negatives prepared on MY-phi-6. Comparative examination of enzymatic activity made it possible to state that according to the peculiarities of metabolic processes, the cells of striated and intralobular secreting ducts are similar to the cells of the secreting terminal parts. A high activity of NADP-diaphorase, G-6-PhDG and acid phosphatase in the epithelium of the secreting ducts, and parallelism, stated between histoenzymatic and morphologic criteria of functional activity proved the participation of these structural-functional units in secret-producing processes. A high activity of NAK-diaphorase, LDG and acid phosphatase in all the parts and in the secreting ducts system, in particular, ensures, besides the processes of protein secret formation, an active transport of natrium and potassium, formation of final saliva and its discharge.