Enzyme histochemical investigations on XXXX .

@entity2828 @entity1418 @entity5 @entity1388 @entity421 @entity2721 @entity81
Histochemical staining for three hydrolytic enzymes were performed in 35 @entity5 and 43 soft tissue @entity5 , malignant as well as benign. @entity421 , intra-osseous as well as extra-osseous, revealed characteristic rich staining for alkaline phosphatase, no matter how dedifferentiated the @entity5 was. Haemangioendothelioma (and normal endothelium), too, showed strong reaction for alkaline phosphatase whereas haemangiopericytoma did not. Alkaline phosphatase furthermore was found in slight to moderate amounts in fibrous proliferations. All other @entity5 examined were negative. Acid phosphatase was found in almost every @entity5 investigated except @entity2828 and @entity81 . However, high activity was characteristic of @entity5 and @entity1418 . The inhibition of acid phosphatase by tartrate was complete except in @entity421 and @entity5 , where only a partial inhibition was seen. There were non-specific esterase reactions in a variety of @entity5 , but very strong reactions were characteristic of @entity1418 and @entity5 . The reaction could be completely inhibited by the addition of @entity1388 . In an era of increasing application of immunohistologic techniques in surgical pathology it might be of value to remember that simple enzyme histochemical stainings may provide helpful diagnostic features in the classification of @entity2721 .
