(A) IHC analysis of Pten, Ezh2 and p53 proteins in prostatic tissues of 4-month-old mice with different genotypes: Ptenpc-/- (n=11); Ezh2pc-/- (n=8); Ptenpc-/-;Ezh2pc-/- (n=10) and 'wild-type' littermate controls (n=10). Scale bars, 50 