Representative photos of PDGF-BB-induced EPC angiogenesis in vitro by PI3K/Akt pathway.

<p>Cells in the control group (<b>A</b>) and the pEGFP-N2-PDGFR-β group (<b>B</b>) were without pretreatment or pretreated with AG1295, LY294002, or sc-221226 for 1 h and then treated with 20 ng/mL PDGF-BB (for the control cells) or 80 ng/mL PDGF-BB (for the pEGFP-N2-PDGFR-β cells). Scale bar = 100 µm.