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Oxygen-induced retinopathy increases endoglin protein levels. (A) Western blot showing endoglin levels in OIR and room air–raised rat retinas at several postexposure time points. Samples in every lane were matched for protein concentration and compared after being normalized to beta-actin. (B) Normalized and averaged results of the western blot band densities. Western blots were independently replicated three times. **P < 0.02.
