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germ layer |
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germ layer [′jərm ‚lāยทər] (embryology) One of the primitive cell layers which appear in the early animal embryo and from which the embryo body is constructed. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Cementoossifying fibroma is a rare nonodontogenic tumor of the periodontal membrane that arises from the mesodermal germ layer This nonneoplastic, locally destructive tumor has occurred as an osseous lesion in the mandible, the maxilla, the zygoma, all the paranasal sinuses, and the orbital and petromastoid regions. 5, 1998--Human pluripotent stem cells -- cells with the demonstrated ability to differentiate in vitro into all three embryonic germ layers -- have been successfully derived in culture by scientists at the Johns Hopkins University School of Medicine, according to a paper to be published in the November 10 issue of Proceedings of the National Academy of Sciences. Spheres are made up primarily of pluripotential progenitor cells that are capable of differentiating into cell types from the three germ layers. |
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