Effect of MNC therapy on lipid deposition in aortas of apoE KO mice. Top panel are typical photomicrographs of aorta root cross-sections comparing an apoE KO-MNC aorta to an apoE KO control aorta. (Oil-Red-O stain, original magnification × 4. Bar: 100 μm). Bar graph shows the average lipid deposition area comparing apoE KO-MNC to apoE KO group. Values are means ± SEM. **p < 0.01 compared to apoE KO (Student's t test).