Article
Characterization of hematopoietic progenitors from human yolk sacs and embryos
15 Dec 1995
Abstract excerpt
Hematopoiesis first arises in the extraembryonic yolk sac, and it is generally believed that yolk sac-derived stem cells migrate and seed the fetal liver at approximately week 6 of development in humans. Recently, the identification at day 8.5 to 9 of multipotential stem cells in intraembryonic sites different from the liver suggests that the establishment of hematopoiesis might be more complex than initially...
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