RAPC promote endothelial survival and migration after hydrogen peroxide-induced endothelial injury. (A) GFP-transfected RAPC could be grown in co-culture with differentiated human endothelial cells. (scale bar = 100micrometers, scale bar inset = 25 micrometers), (B) Representative photomicrograph 13 hours after denudation. Rate of migration in EC+veh (saline) vs EC+RAPC+veh (n=9 per condition, 5 groups compared pairwise) (10.0±1.3micrometers/hr vs 24.4±4.1micrometers/hr; *, p<0.001, [CI=−18.7 to −10.0]), EC+H2O2 vs EC+RAPC +H2O2 (7.0±1. vs 15.5±3.4; **, p<0.001, [CI=−21.7–13.0]) and EC+RAPC+H2O2 vs EC+RAPC+veh (***, p<0.001, [CI=−13.2 to −4.6]) respectively (scale bar = 80micrometers).