Figure 2
From: Patterns of gene expression associated with recovery and injury in heat-stressed rats
Histopathological evidence of cardiomyopathy and inflammation around cardiomyofibers at 48 hours in heat-stressed rats (hematoxylin and eosin staining). Minimal cardiomyopathy in unheated control rats is observed at (A) 20× and (B) 200× magnification. Arrows represent focal areas of cardiomyopathy with few macrophages and rare neutrophils. (C) Cardiac sections from heat-stressed animals show moderate inflammatory infiltrate (arrows) at 48 hours (20× magnification). (D) Inflammation separates and surrounds the cardiomyofibers with occasional degenerative cardiomyofibers (200× magnification).