Cardiac Amyloidosis - XIII

Perimyocytic amyloid deposition in semi-thin plastic-embedded myocardium.  This micrograph illustrates perimyocytic amyloid deposits (pale purple-blue) surrounding and distorting individual myocytes (dark purple-blue).   (Toluidine blue stain.  X800).

The toluidine blue sections are used to map the areas to be examined in ultrathin sections in electron microscopy.