Figure 5. Effect of VEGF on tight junction is mediated via ERK/eNOS. (A, B) Protein levels of ERK/pERK, eNOS/pSer1177, eNOS, and p38/p-p38 in endothelial cells; *P<0.05, **P<0.01, compared with vehicle. At least three separate experiments were conducted; means ± SD.