Abstract
Monoclonal antibodies against human liver arginase were raised in order to determine the exact distribution of arginase in human liver using a modified indirect unlabelled immunoperoxidase method. In normal human liver specific immunohistochemical staining was found in the cytoplasm of hepatocytes. Portal components (bile ducts and veins) and fibrous tissue were non-reactive, while erythrocytes were slightly positive. The specificity of the immunological reaction was confirmed by control tests. Spectrophotometry was used to quantitate the immunohistochemical reaction product, and the results indicated that arginase is homogeneously distributed in the liver lobule.
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