词汇 | mesenchymal |
释义 | BETA Examples of mesenchymalmesenchymal isn’t in the Cambridge Dictionary yet. You can help! It is curious why the mesenchymal lineages appear to be most affected. Interestingly, adipocytes and myocytes originate from a common mesenchymal s t e m cell lineage. At the suture level, proliferation of mesenchymal cells is followed by differentiation into pre-osteoblasts that further differentiate into bone-matrixforming mature osteoblasts. The amnion with its amniotic epithelium and extraembryonic mesenchymal layer faces the amniotic cavity. The responsive cell type is the subepithelial mesenchymal ®broblast-like cell, rather than the amnion epithelium. Following shelf fusion at the midline, the palatal mesenchymal cells condense and undergo intramembranous ossification to form the palatal bones and sutures. Instead, they postulated that the effect was mediated through an interference with mesenchymal differentiation of asubpopulation of cells from the neural crest. One possibility i s that the synovial membrane is gradually repopulated with immature mesenchymal and bone marrow cells with altered properties. These cells then undergo an epithelial to mesenchymal conversion and subsequently emigrate from the neural tube as neural crest cells. Other potential cellular origins are bone-marrow-derived mesenchymal cells, portal fibroblasts and epithelial compartments in the liver, such as cholangiocytes and hepatocytes. Limited data are available in other stem cell systems, such as epithelial stem cells, neural stem cells, satellite cells and mesenchymal stem cells. The mesenchymal layers of the amnion and chorion are separated by the extra-embryonic coelomic cavity. Ionizing radiation predisposes nonmalignant human mammary epithelial cells to undergo transforming growth factor b-induced epithelial to mesenchymal transition. Neural stem cells and mesenchymal stem cells are isolated by selective culture conditions. This molecule is found on a wide variety of mesenchymal cells, including the vascular endothelium. It is believed that epithelial fusion is followed by mesenchymal penetration of the fused processes. Transdifferentiation of retinal pigment epithelial cells from epithelial to mesenchymal phenotype. |
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