Figure 7
![Figure 7](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1475-2840-8-56/MediaObjects/12933_2009_Article_210_Fig7_HTML.jpg)
Insulin and SOD effects on glucose-stressed EPC cultures. Glucose-stressed EPCs were treated with insulin, SOD, or both. (a) Effect of insulin, SOD, or both on NO production. (b) Effect of insulin, SOD, or both on O2- generation. (c) Effect of insulin, SOD, or both on the number of EPC colonies. Data are expressed as mean percentage ± SEM or mean number ± SEM of triplicate measurements in each sample from four independent tests. *P < 0.05, **P < 0.001, ***P < 0.001 vs. glucose-stressed EPCs. NS represents non-significant.