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Figure 2 (A) The percentage of African American and white patients with significant stenosis in zero, one, two or three or more coronary arteries. (B) The distribution of coronary artery stenoses in African American and white patients. LAD = left anterior descending coronary artery; Diag = diagonal coronary artery; LCx = left circumflex coronary artery; OM = obtuse marginal artery; RCA = right coronary artery.