Abstract
The results obtained with the indirect peroxidase technique for the identification of prostate specific acid phosphatase in formalin fixed, paraffin or paraplast embedded autopsy material are compared with the results obtained with the mixed aggregation immuno-cytochemical technique. When using a monospecific antiserum the former technique is prefered. However, when a monospecific antiserum is not available, one has to balance the advantages of the mixed aggregation immuno-cytochemical technique against the disadvantages of having to prepare a monospecific antiserum, necessary for the indirect peroxidase technique. Both methods appeared positive in 20 prostatic carcinomas and in 36 metastases of prostatic carcinomas. In the epithelium of the seminal vesicles and in osteoclasts no acid phosphatase could be detected with the antiserum. A comparison of both techniques, as well as different types of preincubation to diminish nonspecific background staining are discussed.
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