EPC tube formation in vitro. Bright-field image of human microvascular endothelial cells (HMECS) forming vascular networks on Matrigel after 12 hours (A). Fluorescent images of CellTracker Red-labeled HMECs at 9 hours on Matrigel (B). A sculpture designed from five snapshots of a computer simulation of branching morphogenesis illustrating the forces lung cells exert as they form capillaries.
Additional keywords: progenitor cell,endothelium,microvascular,matrigel