A- Representative photographs of Matrigel explants at day 10 after injection of transfected HemSC.
B- Sections of implants in A stained with H&E. Black arrowheads point to lumens filled with red blood cells.
D- Quantification of lumens filled with red blood cells, reported as vessels/mm2, * indicates P<0.0001. Scale bar = 20 μm. Data are mean ± SEM.