Effects of vildagliptin on capillary density in cardiomyocyte cross-sectional area. A: Graphic representation of capillary density expresses as the number of capillaries/mm2 field. B: Typical examples of capillary density in the experimental groups at ×40 magnification. Data are presented as means ± SEM. N = 8-10 for all groups. **P < 0.01 vs. sham group.