Regeneration of blood flow after hind limb ischemia in db/db mice treated with conditioned media from C2C12-Luc-GFP, C2C12-Luc-GFP-HO1 cells or nonconditioned control media. (A) Quantitative analysis of blood flow (n = 5 to 6). Each point represents mean ± SEM; *P < 0.05, versus control. (B) Representative pictures showing blood flow analysis (dark blue = low blood flow, red = high blood flow). Laser Doppler measurements.