Figure 1. Photomicrography of prostatic peripheral zone of groups 1 (a, b) and 2 (c, d). (a) and (b) Stroma without desmoplastic reaction consisting of excess of smooth muscular fibers (ML) and thin collagen fibers (col) adjacent to prostatic ducts. Stains: Hematoxilin-Eosin (a) and Masson Trichromic (b). (c) and (d) Stroma with intense desmoplastic reactivity consisting of excess of collagen fibers (Col) and rare smooth muscular fibers (ML), stains: Hematoxillin-Eosin (c) and Masson Trichromic (d).

a-d: Ep=secretory epithelium; Es-stroma. Scale of 50μm.