IL6 and benign prostatic hyperplasia: The rates of IL-6 positive cells in both P.g-BPH, LPS-BPH and T-BPH groups were higher than that of control group by 4.47-, 6.06- and 2.63-fold, but only the P.g-BPH and LPS-BPH group showed a significant difference (P < 0.001).