Monocyte and macrophage accumulation in atherosclerotic plaques was reduced by OA-NO2. A, Representative immunostained aortic sections (Magnification 10X and 20X, scale bar indicates 100 µm; blue=nuclei, green=MOMA). B, Quantification of MOMA-positive area relative to lesion area. OA-NO2 significantly reduced MOMA-positive area (p<0.001,*p<0.001 vs. vehicle and vs. OA). C, Real-time PCR showed a significant reduction in CD68 and MCP-1 expression in the aortic wall (p<0.05, *p<0.05 vs. vehicle and vs. OA).