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Expression of KLK1 in prostate surgical specimens of patients with BPH and correlation among KLK1, age, and prostate fibrosis. (a, b) Representative IHC photos of KLK1 and Masson photos in different ages of BPH patients, respectively (magnification ×100). (c–e) Pairwise correlations between KLK1 AOD, age, and the area ratio of collagen (n = 47), respectively.
