CD68 and benign prostatic hyperplasia: Interestingly, the density of CD68+ (M1) MΦ was higher than that of CD163+ (M2) MΦ: 24.2- (BPH), 21.1- (GS6), 7.8- (GS7), 5.9- (GS8), or 8.1-fold (GS9) (Figure 3B and Figure 4B).