PCNA and benign prostatic hyperplasia: As we expected, the prostate volume, PI, and PCNA expression in BPH group were dramatically increased comparing with those in the sham-group, which were further inhibited in CS group (Figures 4(a), 4(b), 4(d), 4(e), and 4(f)), providing evidence that CS is an efficient administration for BPH treatment in accordance with the clinical experience in China.