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Endothelial differentiation of DsRed-LLCcm in vivo. Tumors derived from DsRed-LLCcm cells were stained with CD31 (red) and DsRed (green) antibodies. A: A typical CD31+ endothelial vessel comprised of DsRed+ cells. Scale bar: 25 µm. B: A blood vessel comprised of CD31+/DsRed- cells and CD31+/DsRed+ cells. Scale bar: 58 µm.
