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Figure 4 (Left) Increased percent macrophage area in coronary tissue from patients with diabetes mellitus versus tissue from patients without diabetes. (Right) Photomicrographs of coronary atherectomy tissue immunostained with antihuman pan-macrophage antibody. Larger macrophage content is seen in coronary tissue from a patient with diabetes mellitus (A) than in coronary tissue from a patient without diabetes (B). Reprinted with permission from Moreno PR, et al. Circulation 2000;102:2180–4.