Research Article

Reactive Oxygen Species Induce Endothelial Differentiation of Liver Cancer Stem-Like Sphere Cells through the Activation of Akt/IKK Signaling Pathway

Figure 1

Hep G2 cells form nonadherent, self-renewing spheres in stem cell-conditioned medium. The sphere formation of a single cell was recorded at days 1, 3, 5, 7, 9, and 11 (200×).