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Fig. 1 | BMC Nephrology

Fig. 1

From: Central fibrous area in the glomerular vascular pole consists of fibrous collagens and is associated with advanced age: a cross-sectional study

Fig. 1

Histological findings of central fibrous area (CFA) in the glomerular vascular pole. a CFA was observed as a monotonous fibrous lesion in the glomerular vascular pole (arrow). b CFA was also found as a fibrous lesion encircling afferent arteriole (arrow). c–e The area was stained with periodic-acid Schiff weakly positive (c; arrow), periodic-acid silver methenamine positive (d; arrow), and blue in Masson’s-trichrome (e; arrow). f Congo red staining was negative (arrow), differing from renal amyloidosis. Magnification × 400

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