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Figure 1 Photomicrographs of cross sections of porcine coronary arteries 28 days after injury (hematoxylin and eosin staining, 20x). (A) Representative light microscopy cross section of injured coronary artery from recombinant P-selectin glycoprotein ligand-immunoglobulin group, showing mild macrophage infiltration. (B) Representative light microscopy cross section of injured coronary artery from the placebo group, showing extensive macrophage infiltration.