Figure 6 of Hartmann, Mol Vis 2011; 17:1577-1587.

Figure 6. Ratio of VEGF/PEDF protein in ROP model normalized to RA values. The ratio of mean VEGF/PEDF in the ROP model normalized to respective RA means at selected postnatal day ages. A ratio >1.0 favors angiogenesis (P8, P12, P14, P18) and a ratio <1.0 favors angiogenic inhibition (P11 and P13).