Shah R M
J Embryol Exp Morphol. 1979 Oct;53:1-13.
Cellular and subcellular events during reorientation of the palatal shelf in hamster fetuses are described. An alteration in the morphology of the epithelial and the mesenchymal cells is observed during shelf realignment from a vertical to a horizontal plane. The mesenchymal cells elongate and subsequently appear to protrude in the medially bulging palatal shelf. Microtubules, microfilaments and close contacts are associated with elongation of the mesenchymal cells. The cells of the thickened epithelium may play a mechanical role in providing direction to the mesenchymal cells during palatal shelf reorientation. The altered morphology of the mesenchymal cells may be associated with the intrinsic shelf force implicit in Walker and Fraser's theory of palatal shelf reorientation.
本文描述了仓鼠胎儿腭板重新定向过程中的细胞和亚细胞事件。在腭板从垂直平面重新排列到水平平面的过程中，观察到上皮细胞和间充质细胞形态的改变。间充质细胞伸长，随后似乎在向内侧隆起的腭板中突出。微管、微丝和紧密连接与间充质细胞的伸长有关。增厚上皮的细胞在腭板重新定向过程中，可能在为间充质细胞提供方向方面发挥机械作用。间充质细胞形态的改变可能与沃克和弗雷泽腭板重新定向理论中隐含的腭板内在力有关。
