Mesentoblast

{{Short description|Cells from which the mesoderm originates}}

{{Multiple issues|

{{refimprove|date=October 2017}}{{One source|date=January 2025}}

{{Orphan|date=January 2017}}

}}

Mesentoblasts, also called 4d cells, are the cells from which the mesoderm originates. Mesentoblasts are found in the blastopore area between the endoderm and the ectoderm. In protostomes the embryos are mosaic, so mesentoblast removal will result in failure of formation of the mesoderm and other structures related to the mesoderm, which in turn will give abnormal embryos. The mesentoblast migrates to the blastocoel where it reproduces to form a mass of cells that becomes the mesoderm.{{cite book|title=Where Do We Come From?: The Molecular Evidence for Human Descent|first1=Jan|last1= Klein|first2= Naoyuki|last2=Takahata|publisher=Springer Science & Business Media|date=9 March 2013|url=https://books.google.com/books?id=0FvxCAAAQBAJ|page=163|isbn=9783662048474}}