Effect of aqueous extracts of S. stolonifera on the serum acid phosphatase (ACP) activity, prostate index (PI), and the concentration of serum dihydrotestosterone (DHT), prostatic acid phosphatase (PACP) and SRD5A2 in a castration and testosterone-induced mice model of benign prostatic hyperplasia (BPH). Here, SRD5A2 is linked to benign prostatic hyperplasia.