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Lesions and TUNEL-positive cells in vein isografts between apoE−/− and apoE+/+ mice. Vein grafts were performed as described in the legend to Figure 1 ▶ and the Materials and Methods. TUNEL labeling was performed using the procedure same as for Figure 6 ▶ . Data are means ± SEM (a) or SD (b) of 6 animals per group. *, Significant difference from apoE+/+ veins grafted to apoE+/+ mice; **, significant difference from apoE+/+ or apoE−/− veins grafted to apoE+/+ mice. P < 0.05.
