FIGURE 2.

A, representative hematoxylin-eosin staining of kidney samples. Arrows indicate mesangial matrix deposition in diabetic kidney. B, representative Masson's trichrome staining of kidney sections. Arrows indicate collagen fibers stained blue in diabetic kidney. C, representative transmission electron micrographs of renal tissue. Arrows indicate glomerular basement membrane thickening in diabetic kidney. Administration of NaHS attenuated mesangial matrix deposition, renal interstitial fibrosis, and glomerular basement membrane thickening in diabetic rats (A–C).