“…Classically, cellular prostatic acid phosphatase (cPAcP) is used as a biomarker of the tissue origin for metastasized prostate cancer cells, and secreted PAcP serves as a serological marker for the diagnosis of the cancer (Chu et al, 1982;Chu and Lin, 1998). However, it should be noted that in prostate carcinomas, cPAcP expression is decreased, much lower than that in noncancerous prostate cells (Loor et al, 1981;Lin et al, 1983Lin et al, , 2001Solin et al, 1990).…”