Dev Dyn 1999 May 01;2151:2-11. doi: 10.1002/(SICI)1097-0177(199905)215:1<2::AID-DVDY2>3.0.CO;2-U.

What guides early embryonic blood vessel formation?

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Survival of vertebrate embryos depends on their ability to assemble a correctly patterned, integrated network of blood vessels to supply oxygen and nutrients to developing tissues. The arrangement of larger caliber intraembryonic vessels, specification of arterial-venous identity, and proper placement of major branch points and arterial-venous connections are all precisely determined. A number of recent studies in both mammalian and nonmammalian vertebrate species, reviewed here, have now begun to reveal the major role played by genetically predetermined extrinsic cues in guiding the formation of early embryonic blood vessels and determining the global pattern of the vasculature.

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Species referenced: Xenopus
Genes referenced: ephb2 ephb4 flt1 flt4 hey2 kdr tal1 vegfa


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