Prostatic-specific antigen: An immunohistologic marker for prostatic neoplasms

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Abstract
Antiserum to a human prostate‐specific antigen was raised in a rabbit and utilized by immunoperoxidase staining to evaluate its potential value as a diagnostic histologic marker for tumors of prostatic origin. All primary and metastatic prostatic malignancies reacted positively, whereas nonprostatic neoplasms did not stain with this procedure. This is the first immununohistochemical marker for prostate gland epithelium which does not represent prostatic acid phosphatase.