Effects of kinase inhibitors on the HSP70 protein expression in HUVECs. Cells were infected with AdGFP (200 MOI) or uninfected control and cotreated with either PD98059 (PD), SB203580 (SB), SP600125 (SP), or LY294002 (LY) for 48 hours. Cells were harvested and lysed for Western blot analysis of HSP70.