Figure 3. Amyloid aggregations in the human myocardium:

(a) staining with 0.1% solution of Congo red, nuclear counterstaining with Ehrlich’s hematoxylin; (b), (c) staining with 0.1% solution of DNSAF, nuclear counterstaining with Ehrlich’s hematoxylin; (a), (b) microscopy in the transmitted light (×10); (c) fluorescence microscopy (×40). Red color — fluorescence of amyloid deposits stained with DSNAF; yellow color — autofluorescence of lipofuscin in cardiomyocytes