Figure 2.

Photomicrographs of representative myocardial sections from cats with cardiomyopathy and myocarditis. (Top) Section from the left ventricular free wall. Extensive mixed inflammatory infiltrate is located predominantly in the subendocardial region consisting of lymphocytes, neutrophils, and plasmacytes. Adjacent myocyte necrosis is severe. Hematoxylin and eosin stain (H&E); magnification ×200. (Bottom) Section from the right auricle. Diffuse neutrophilic infiltrate is associated with extensive myocardial necrosis which is particularly prominent in the subendocardial region. Subendocardial hemorrhage is present. Hematoxylin and eosin stain (H&E); magnification ×100