Figure 4
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1475-2840-8-56/MediaObjects/12933_2009_Article_210_Fig4_HTML.jpg)
Relationship between NO production and O 2 -generation by EPCs, and the plasma glucose and HbA1c levels in type 2 diabetic patients. (a) Scatter plot of the relationship between NO production and O2- generation by EPCs from type 2 diabetic patients and the individual patient's plasma glucose and HbA1c levels at the time of blood collection. (b) Scatter plot of the relationship between SOD activity in EPCs from type 2 diabetic patients and O2- generation, and NO production of their EPCs.