Fig. 5. Visualization of collagen fibers type I (black filled arrows) and type III (blue empty arrows) in control (A, B) and in finasteride-treated rats' kidneys that exhibited well visible tubulointerstitial fibrosis (C, black filled arrows and blue empty arrows) and glomerulosclerosis (D, black filled arrows). Sirius Red staining, polarized microscopy. Scale bar: 100 mm. Data from Baig et al (Int J Environ Res Public Health 2019;16:E1726) [18].
