VEGF rescues vascular endothelial tube formation suppressed by PI3K pathway inhibitors.

<p>(A) Photographs of the formation of tube-like structures. (B) Experiments were performed as in panel A, and the cumulative tube length was examined. a, b, c, and d indicate P<0.05 versus Unstim, DMSO, LY, and AZD, respectively. (C) Diagram of the PI3K signaling in immune cells.