管细胞

From the tests,we have obtained some structural variant features related with salt resistance and demonstrated the successful introduction of Rhizophora apicularta DNA into tomato.This thesis contains two parts. In the first part,the morphological and anatomical structures of the leaves were investigated. As to the morphology,some difference between control and transformed tomato were found. The leaf dimensions of the transformed tomato with unextended leaves were smaller than that of control. These structure changes should help to decrease the evaporation of water effectively and release the physiological drought resulted from saline.

本实验分两部分：第一部分、对转化番茄的形态及细胞显微结构进行观察与分析，实验表明转化番茄形态与对照相比有明显的变化，其叶面积变小，叶形收拢，这种结构可有效地减少水分的蒸发，缓解由盐胁产生的生理干旱；组织解剖结构结果显示，耐盐番茄在细胞结构上发生了明显的变异：其气孔器倾向下陷，表皮毛增多，叶脉微管组织不发达，微管束周围出现增多的贮水细胞，叶缘及其它部位表面分化出大型的多细胞分泌型结构，这些结构与转化番茄后代较强的耐盐能力有关。

Results: At 3, 7 days post-grafting, SC survived in the lesioned area, hippocampus and ventriculus lateralis. At 14 days post-grafting, SC were migrating along ependyma, meninges and blood vessels. In the area of corpus callosum, SC were arranged like chains. At 60 days post-grafting, the number of SC was decreased and the fluorescent mark of SC was weakened. At 90 days post-grafting, the survival cells were few.

结果：3天、7天时移植的雪旺细胞大量存活于损伤区、海马、侧脑室的脉络丛组织中。14天后可观察到细胞沿软脑膜、室管膜、血管周间隙迁移，并在胼胝体部位排列成索条状。60天时雪旺细胞的标记荧光减弱，细胞密度减少。90天时已观察不到荧光。

Autologous MSC can be obtained easily,their source in human are plenty , own active proliferationand potential to difference into chondroblast.

自体骨髓基质干细胞来源丰富，取材容易，具有旺盛的增殖能力及向成软骨细胞分化的潜能，已成为软骨组织工程的首选种子细胞，但MSC诱导分化为成软骨细胞且应用于软骨组织工程的技术尚不十分完善，目前主要采用的技术为细胞团块离心管培养，其构建的软骨组织在力学性能上很难达到关节软骨的要求。

Autologous MSC can be obtained easily, their source in human are plenty, own active proliferation and potential to difference into chondroblast. Now MSC become the chief seed-cell in cartilage tissue engineer, but the technology to stimulate MSC differentiate into chondroblast is not very successful, the standard technology is culture the cell-ball in centrifuge tube, the reconstructured cartilage-like tissue is not achieve the mechanics of hyaline cartilage.

自体骨髓基质干细胞来源丰富，取材容易，具有旺盛的增殖能力及向成软骨细胞分化的潜能，已成为软骨组织工程的首选种子细胞，但MSC诱导分化为成软骨细胞且应用于软骨组织工程的技术尚不十分完善，目前主要采用的技术为细胞团块离心管培养，其构建的软骨组织在力学性能上很难达到关节软骨的要求。

Autologous MSC can be obtained easily,their source in human are plenty , own active proliferationand potential to difference into chondroblast. Now MSC become the chief seed-cell in cartilage tissue engineer , but the technology to stimulate MSC differentiate into chondroblast is not very successful,,the standard technology is culture the cell-ball in centrifuge tube,the reconstructured cartilage-like tissue is not achieve the mechanics of hyaline cartilage.

自体骨髓基质干细胞来源丰富，取材容易，具有旺盛的增殖能力及向成软骨细胞分化的潜能，已成为软骨组织工程的首选种子细胞，但MSC诱导分化为成软骨细胞且应用于软骨组织工程的技术尚不十分完善，目前主要采用的技术为细胞团块离心管培养，其构建的软骨组织在力学性能上很难达到关节软骨的要求。

Scientists have known that neural stem cells play a key role in both embryonic and postnatal mice, driving the development of specialized cells within the brain such as neurons, astrocytes, oligodendrocytes, and ependymal cells.

科学家们已经知道神经干细胞在胚胎和出生后小鼠均扮演着重要角色，推动着大脑具体细胞的发育例如神经元、形细胞，胶质细胞和室管膜细胞。

Scientists hae known that neural stem cells play a key role in both embryonic and postnatal mice, driing the deelopment of specialized cells within the brain such as neurons, astrocytes, oligodendrocytes, and ependymal cells.

科学家们已经知道神经干细胞在胚胎和出生后小鼠均扮演着重要角色，推动着大脑具体细胞的发育例如神经元、星形细胞，胶质细胞和室管膜细胞。

The pinwheel's core contains the apical endings of B1 cells and in its periphery two types of ependymal cells: multiciliated (E1) and a type (E2) characterized by only two cilia and extraordinarily complex basal bodies.

其中风车的中心含有B1细胞的顶端末梢，而在风车周围则包含两种室管膜细胞：其中一种是多纤毛的E1细胞，另一种则是具有2纤毛以及非常复杂基体的E2细胞。

The pinwheel's core contains the apical endings of B1 cells and in its periphery two types of ependymal cells: multiciliated (E1) and a type (E2) characterized by only two cilia and extraordinarily complex basal bodies.

其车的中心含有B1细胞的顶端末梢，而在风车周围则包含两种室管膜细胞：其中一种是多纤毛的E1细胞，另一种则是具有2纤毛以及非常复杂基体的E2细胞。

However among the experimental groups no positive labeling was found in 2h group, positive cells were labeled in SFO and choroids plexus of lateral ventricles in 6h group, especially in ependymal cells of body part of SFO, but no positive cells were found in the other regions.

观察实验组可见：2小时组未发现阳性结果。6小时组在SFO与侧脑室脉络丛，发现阳性细胞，在SFO体部的室管膜细胞阳性较多；其它部位未见阳性细胞。8小时与16小时组在海马、下丘脑、背侧丘脑、脉络丛等多处均有阳性细胞。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。