Comparison of the DSIgG Fc glycopeptide ratios between NDR, NPDR, and PDR groups.A, DSIgG1 G1F/G0F; B, DSIgG1 G1FN/G0FN; C, DSIgG1 G2F/G0F; D, DSIgG1 G2F/G1F; E, DSIgG2 G1F/G0F; F, DSIgG2 G1FN/G0FN; G, DSIgG2 G2/G1; H, DSIgG2 G2F/G0F; I, DSIgG2 G2F/G1F.