Fig 1. Serum nitric oxide levels in human subjects. A. Human serum NO levels in Control (CT) and Type 2 diabetes (T2DM). Data were represented as box (median (IQR)) and whisker plots. *** p < 0.001 vs Control (CT). B. Human serum NO levels in Control (CT), Coronary artery disease (CAD) and Type 2 diabetes with coronary artery disease (DMCD). Data were represented as box (median (IQR)) and whisker plots. *** p < 0.001 vs Control (CT), ### p < 0.001 vs CAD. C. Human serum NO levels in Control (CT) and Type 2 diabetes with hypertension (DMHT). Data were represented as box (median (IQR)) and whisker plots. D. Human serum NO levels in two group of patients having diabetic duration below 5 years and above 5 years. Data were represented as box (median (IQR)) and whisker plots. *** p < 0.001 vs diabetic duration below 5