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Angioblasts of the developing vascular system require many signaling inputs to initiate their migration, proliferation and differentiation into endothelial cells. What is less studied is which intrinsic cell factors interpret these extrinsic signals. Here, we show the Lim homeodomain transcription factor islet2a (isl2a) is expressed in the lateral posterior mesoderm prior to angioblast migration....
The molecular pathways by which newly formed, immature endothelial cell tubes remodel to form a mature network of vessels supported by perivascular mural cells are not well understood. The zebrafish iguana (igu) genetic mutant has a mutation in the daz-interacting protein 1 (dzip1), a member of the hedgehog signaling pathway. Loss of dzip1 results in decreased size of the cranial dorsal aortae, ultrastructural...
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