A. Heart, cross section, gross.  Large area of pallor in the antero-septal region of the left ventricle represents a recent myocardial infarction.

B. Recent myocardial infarction , cross section of myocardial cells .  High power.  Note absence of myocardial cell nuclei, and edema and fragmented  (neutrophilic) debris in the interstitium

C. Recent myocardial infarction , longitudinal section of myocardial cells .  High power.  Note absence of myocardial cell nuclei and presence of polys in the interstitium.

D. Recent myocardial infarction , longitudinal section of myocardial cells .  Medium High power.  Again, note the absence of myocardial cell nuclei  in the central necrotic area and numerous polys in the interstitium.  Myocardial nuclei are seen in the viable area at the edge of the slide