Quantification of an in vivo permeability assay was performed using the modified Miles assay. Mice were injected intravenously with 100 μL of Evans blue dye, followed immediately by a subcutaneous injection of saline, Hellerin (172 ng, 70 nM), or VEGF-A (143 ng, 50 nM). The results are presented as nanograms of weight of extravasated Evans blue dye per milligram of weight of tissue sample. * P<0.05, compared with saline control.