Embryogenesis of the first circulating endothelial cells.

Prior to this study, the earliest appearance of circulating endothelial cells in feline 1-hcpch vaccine warm-blooded animals was unknown.Time-lapse imaging of germ-line transformed Tie1-YFP reporter quail embryos combined with the endothelial marker antibody QH1 provides definitive evidence for the existence of circulating endothelial cells - from

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