Blastocyst elongation, trophoblastic differentiation, and embryonic pattern formation
نویسندگان
چکیده
منابع مشابه
Embryonic Stem Cells: from Blastocyst to in vitro Differentiation
A stem cell is a specific kind of cell that has the unique capacity to renew itself and to give rise to specialized cell type. In terms of potentially, stem cells can be classified in three types: • Totipotent: is the ability to form all cell types, including the extra-embryonic tissues. In mammals, the fertilized egg, zygote and the first 2, 4, 8, 16 blastomeres from the early, are examples of...
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One of the earliest and most-fundamental pattern- formation events in embryonic development is endoderm and mesoderm specification. In sea urchin embryos, this process begins with blimp1 and wnt8 gene expression at the vegetal pole as soon as embryonic transcription begins. Shortly afterwards, wnt8/blimp1 expression spreads to the adjacent ring of mesoderm progenitor cells and is extinguished i...
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During plant embryogenesis, a simple body plan is established that consists of shoot meristem, cotyledons, hypocotyl, root, and root meristem along the apical–basal axis and a concentric arrangement of epidermis, subepidermal ground tissue, and central vascular cylinder along the radial axis. To establish this organization, the cells of the embryo need to become specified and must differentiate...
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Maternal expression of the Toll gene is required for the production and the correct spatial organization of all lateral and ventral structures of the Drosophila embryo. We show here that the Toll gene is transcribed zygotically in the embryo and that zygotic expression is important for the viability of the larva. Both genetic and molecular data indicate that the zygotic Toll product has the sam...
متن کاملRegulation of blastocyst formation.
Preimplantation or pre-attachment development encompasses the "free"-living period of mammalian embryogenesis, which directs development of the zygote through to the blastocyst stage. Blastocyst formation is essential for implantation, establishment of pregnancy and is a principal determinant of embryo quality prior to embryo transfer. Cavitation (blastocyst formation) is driven by the expressi...
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ژورنال
عنوان ژورنال: REPRODUCTION
سال: 2008
ISSN: 1470-1626,1741-7899
DOI: 10.1530/rep-07-0355