Figure 2. Comparison of the plasma concentrations of ANG-1, CXCL16, PDGF-BB, TIMP-1, and VEGFR2 in the validation cohort. ANG-1, PDGF-BB, TIMP-1 and VEGFR2 concentrations were significantly increased in DME samples. The between-group difference of CXCL16 concentration was not significant.