PMC10392626_01
Obesity-associated vascular and mesangial AA amyloidosis. Congo red staining highlights mainly vascular amyloid deposits and scant amyloid deposition in the mesangium (A) with apple-green birefringence under polarized light (B). The amyloid stained strongly with anti-SAA antibody (C).
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Figure1
Congo red staining highlighted mainly arteriolar and arterial amyloid deposits with few deposits in the mesangium (Figure 1A), and apple-green birefringence of these deposits was noted under polarized light (Figure 1B). The deposits stained strongly with anti-SAA antibody (Figure 1C) but not with anti-kappa and anti-lambda antiserum (not shown).