有鞘的

Neural cell adhesion molecule L1, discovered in the 80s, is one of the matters that can promote nerve regeneration. It can mediate the interaction of cell-to-cell and cell-to-matrix, take great efforts on neurite outgrowth and fasciculation, migration of neural cells, formation of the myelin, structure of neural trace, transmembrane signal transduction, inhibiting apoptosis of neural cells, even on immune system and formation of the tumor. Li is discovered on the mouse's Cerebellar membrane primarily. Thereafter, it also is found in post- mitotic neurons, pre- and non-myelinating Schwann cells and so on.

神经细胞粘附分子L1（L1）是80年代发现的具有促进神经再生作用的物质，它能介导神经细胞与神经细胞之间的粘附，在神经轴突的生长、聚集，神经细胞的转移，纤维髓鞘的形成，神经通路的构建及信号的转导，抑制神经细胞的凋亡甚至在免疫系统、肿瘤的发生等方面均具有非常重要的作用。L1最初是从小鼠的小脑膜中发现，后来发现在有丝分裂后的神经元，髓鞘形成前及非形成髓鞘的雪旺细胞等组织中同样存在。

A sheath fold looks like a scabbard or human's tongue. Its fold axial plane or flatten ed plane is parallel to the foliation and there is strong stretching lineation on the sheath fold.

鞘褶皱看起来像一把鞘或是像人的舌头，它的褶皱轴面或压扁面是平行岩石中的片理面的，鞘褶皱上有强烈的拉伸线理。

Myelin sheath thickness and maturity was superior in EFG group under electron microscopic observation.

超微结构观察：EGF组再生神经的有髓纤维数，髓鞘厚度，髓鞘的成熟度明显好于对照组。

Being a lipid second messenger, sphingomyelin lysis product-ceramide play an important role in inducing and preventing apoptosis.

近年来的研究表明细胞凋亡与鞘脂质代谢有密切的关系，鞘磷脂的水解产物神经酰胺作为脂质第二信使在诱导和抑制细胞凋亡中起着重要的作用。

EGF remarkably stimulated the dermal sheath fibroblasts, dermal Tibroblasts and demal papilla cells. Effection on the dermal sheath fibroblasts was the strongest. bFGF, GM-CSF, insulin and hydrocortisone had not effective on them.

EGF对真皮鞘细胞、真皮成纤维细胞和毛乳头细胞有显著的促生长作用，其中对真皮鞘细胞的作用最强，而bFGF、GM-CSF、胰岛素+氢化可的松对三种细胞没有明显的作用。

However, in the absent of LEF-2, the formation of viral nucleocapsid derived from lef-2 ko bacmid appeared to be normal under transmission electron microscope, suggesting that the life cycle of lef-2 ko bacmid could proceed through DNA replication to viral pakckaging unimpededly.

虽然病毒之复制受到lef-2基因缺失的影响，但由於病毒之构造蛋白仍可表现，如鞘蛋白(VP39)等，因此经由穿透式电子显微镜观察，可知缺失lef-2之病毒仍可有正常的核酸蛋白鞘形成。

In acoustic neuromas, patients with LOH were younger at the age of diagnosis, and larger tumor size, had shorter history and higher growth rate. Conclusions CHR22 LOH was a frequent event in the tumorigenesis of sporadic schwannoma. The presence of CHR22 LOH was related to clinical features.

CHR22 杂合子丢失是神经鞘瘤发生中的常发事件，缺失的区域包括NF2基因，CHR22 杂合子丢失与听神经瘤的临床行为有一定的关系，CHR22 杂合子丢失可能是神经鞘瘤增殖的重要因素。

However, there were no statistically significant changes of the length density and the total volume of myelinated fibers and the total volume of myelin sheathes in the white matter of aged rats when compared with those of young rats.

但是有髓神经纤维长度密度、有髓神经纤维总体积和髓鞘的总体积没有显著老年性改变。

And Joab was in military dress, and over it was a belt with a sword in its sheath, fastened on his loins; and when he went forward, it fell out.

那时约押束着战衣，战衣上有佩刀的带子系在腰间，刀在鞘内；约押前行，刀从鞘内掉出来。

And Joab was in military dress, and over it was a belt with a sword in its sheath, fastened on his loins; and when he went forward, it fell out.

那时约押束著战衣，战衣上有佩刀的带子系在腰间，刀在鞘内；约押前行，刀从鞘内掉出来。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。