显微照片的前列腺腺体的实验治疗组21天后:(a)模型;(b)低剂量的石油(30毫克/公斤);(c) mid-dose石油(100毫克/公斤);石油(d)高剂量(300毫克/公斤);(e)非那雄胺(15毫克/公斤);(f)正常控制。前列腺分泌物(S)、上皮(EP)和纤维肌性的基质(FS),模型组与厚大的腺泡上皮细胞,前列腺分泌物,薄纤维肌性的基质。低剂量组略大的腺泡,光摄护腺分泌物和薄纤维肌性的间质。Mid-dose组显示与薄小腺泡上皮中度前列腺分泌,厚的纤维肌性的基质。高剂量组显示小型腺泡,中度前列腺分泌物、薄上皮和粗纤维肌性的间质。 Finasteride group had almost absent prostatic secretions and a very few amount of fibromuscular stroma, sham group had small-sized acini, little or no prostatic secretion, together with few strands of the fibromuscular stroma.