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Blood vessels first make their appearance in several scattered vascular areas which are developed simultaneously between the entoderm and the mesoderm of the yolk-sac, i. e., outside the body of the embryo. Here a new type of cell, the angioblast or vasoformative cell, is differentiated from the mesoderm.
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These cells as they divide form small, dense syncytial masses which soon join with similar masses by means of fine processes to form plexuses.
Angioblasts are one of the two products formed from hemangioblasts (the other being pluripotential hemopoietic stem cells).
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Angioblast". A list of authors is available in Wikipedia.|