Figure 2: Allele frequencies of NOS34b/4a (A) and NOS3 rs1799983 (B) in type 1 and type 2 diabetic-associated microvascular complications. In (Figure 2A) the alleles 4a and 4b correspond to the rare and wild type, respectively, and in (Figure 2B), the alleles T and G signify the rare and wild type, respectively. CF, free microvascular complications; DPN, diabetic neuropathy; C, combined diabetic microvascular complications (retinopathy, neuropathy, nephropathy).