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Effect of PPE on DHT, testosterone, PSA, and SRD5A2 levels in serum. The concentration of (A) DHT, (B) testosterone, (C) PSA, and (D) SRD5A2 were analyzed using an ELISA kit. Data are presented as mean ± SD (n = 8). ### p < 0.001 compared with control group, and values with different letters indicate significant differences, * p < 0.05, ** p < 0.01, and *** p < 0.001, compared with BPH group.
