Tβ4 moderates postischemic inflammation. A, Example of neonatal endothelial cells grown on microslides with or without eEPC preincubation (1 hour) and superfused with fluorescing monocytic THP-1 cells (see Methods). B, Quantitative adhesion of THP1 cells on activated endothelium without or with eEPC coincubation (n=3; #P<0.05 vs control). C, Myeloperoxidase (MPO) activity in nonischemic, AAR (noninfarcted), and infarcted regions after retroinfusion of eEPCs transfected with Tβ4 or scrambled (s.c.) shRNA (n=6; §P<0.05 vs nonischemic control; #P<0.05 vs nonischemic eEPCs plus control shRNA).