Figure 6

Immunohistochemical analysis of SSEA-4 expression in PCa surgical specimens.
(A) Expression of SSEA-4 was positive in 77/99 of PCa tissues and negative in 22/99 (400 × magnification). (B) The patients with PCa were divided into positive- and negative-expression groups based on SSEA-4 immunostaining scores. The survival rate of the patients in the positive-expression group was significantly lower than that of patients in the negative-expression group (P = 0.033 by the log-rank test).