Ning for GATA2 and FOXC2 demonstrated elevated levels of nuclear GATA2 (A, B, and E) and FOXC2 (C and D) following exposure of hLECs to OSS. Error bars correspond to SEM, n = 4 independent experiments. P 0.00001, by 2-tailed Student's t test. Scale bars: 50 m.why PROX1 is usually silent in hBECs. To investigate the mechanisms by which the PROX1 1 kb region may well contribute to turning PROX1 "on