细胞分裂

After vascular cambium cells divide, the progeny cells on the interior side become xylem parental cell.

维管形成层细胞分裂后，在内侧分裂出来的细胞成为木质部的母细胞。

Pekinensis . IAA at concentration of 0.4-1. 0 mg/L in solid MS medium incited many adventitious roots on hypocotyl segments. The earliest anatomic changes were observed on cut surface of hypocotyl segments under optical microscope 24 hours after IAA treatment: cytoplasmic and nuclear density became higher in a few of parenchytmatous cells adjacent to phloem in tissue of pericycle, followed by cell divisions.

在生长素诱导24h后，可借助显微切片观察到下胚轴切面附近明显的解剖学变化：首先是中柱鞘内靠近韧皮部的薄壁细胞的细胞质与细胞核变浓，染色加深，部分细胞分裂；随后是分裂的细胞团增大，逐渐形成根原基并分化出根冠。

After the cell of superstratum is dead, the element that prevents basic level segmentation disappeared, the cell begins to so that have ego repair,break up.

上层的细胞死后，阻止基层细胞分裂的元素消失了，细胞就开始分裂以便进行自我修复。

OBJECTIVE To study the effect of centrosome on mutation and development of gene of laryngeal carcinoma by investigating centrosome expression and metaphase morphology in laryngeal squamous cell carcinoma cell lines.

目的通过对喉鳞状细胞癌细胞系中心体表达和细胞分裂形态的研究，探讨中心体通过对细胞分裂过程的调控，在促进喉癌基因不断变异、发展机制过程中的作用。

Soybean hypocotyls were treated with doses of UV-B at 8.22 kJ/m~(2d and 12.42 kJ/m~(2d UV-B radiation, corresponding to depletions in the stratospheric ozone of about 12 % and 20%, respectively, for a clear solstice day at Lanzhou city (36.04°N, 1550m),China.

报道表明增强 UV - B辐射会引起细胞 DNA形成嘧啶二聚体 [2 ] ，影响细胞正常代谢和分裂 [3] ，导致黄瓜子叶 [4 ] ，欧芹叶片 [5] ，小麦叶片 [6 ] 细胞分裂速度减慢。

After that, the fruit grew by the growing of cell volume.3. The development of fruit spot had experienced 3 stages; it could be formed till 45 days after bloom.

黄金梨果实细胞分裂的时间进行到花后25天(5月10日)左右；细胞停止分裂后，幼果的增大主要靠细胞体积的增加。

Thymidine analogs, including bromodeoxyuridine, chlorodeoxyuridine, iododeoxyuridine, and tritiated thymidine, label diiding cells by incorporating into DNA during S phase of cell diision and are widely employed to identify cells transplanted into the central nerous system.

中文摘要：胸苷类似物包括溴脱氧尿苷、氯脱氧尿苷、碘苷和氚标记的胸苷，它们可以在细胞分裂的S期整合入待标记的分裂细胞，因此，被广泛地用于鉴定中枢神经系统细胞移植。

The morphology and structure of reconstructed tissue was detected by microscope and scanning electron microscope.Results:(1) Compared with the control group, the cellular proportion of laminin group increased in 62 ~M phase, and decreased in Go~Gi phase significantly. As shown by the microscope, the cells of control group were in low density. The cells in mass connected tightly. The microfilament appeared reticular formation. The nucleus were the same in size. The cells of laminin group were in high density and put out so many lamellipodia, filopodia, which connected with the surrounding cells. The microfilament increased, elongated, and changed from reticulodromous to sarciniform, which reached to the pseudopods. The nucleus were different in size .(2) As shown by the inverted microscope and the cell growth curve, comparing with the controlgroup, cells of each test group increased evidently. The cellular proportion of each test group increased in S phase and G2 ~M phase, and decreased in Go~Gi phase significantly, but there was no considerable interations between LN and EGF;(3) As shown by the morphological observations, the cultured cat corneal endothelial cells formed an integrated membrane, and attached to the Descemets membrane closely, which was similar to the natural tissue. The cells connected tightly to each other, and some of them arranged in hexagon approximately.

结果：(1)层粘连蛋白组处于G_2～M期细胞比例较对照组显著提高，Go～G_1期细胞比例显著下降，提示层粘连蛋白促进内皮细胞DNA合成，及细胞分裂增殖；光镜下，对照组细胞分布成团状，细胞密度较低，细胞间连接紧密，细胞内微丝结成网状，细胞核大小一致；与对照组相比，层粘连蛋白组细胞生长旺盛，细胞密度高，向周边伸出大量板状及丝状伪足，细胞内微丝增多、拉长、集结成束，伸入伪足中，细胞核形状大小不一致；(2)倒置显微镜观察及细胞生长曲线显示，各组细胞数目随时间增加而明显增多，各实验组较对照组增生显著，EGF和LN联合应用组各时间点细胞数目最高；实验组处于S期和G_2～M期细胞数目增加，Go～G_1期细胞数目减少；提示EGF、LN单独及联合应用均可促进细胞增殖，但尚不能认为二者有交互作用；(3)倒置显微镜下，组织培养的猫角膜内皮细胞排列成密集的单层，细胞间连接紧密；组织学观察发现，培养的猫角膜内皮细胞形成完整的内皮层，贴附于脱水基质的后弹力膜上，与正常的角膜内皮组织结构相似；扫描电镜下，组织培养的猫角膜内皮细胞间紧密镶嵌排列，可见某些细胞呈近似六边形排列，细胞大小不甚一致，胞核清晰。

Fission A type of asexual reproduction in which a parent cell divides into two daughter cells genetically identical to the parent. Binary fission occurs in many unicellular organisms, such as protoctists, bacteria, and fission yeasts.

裂殖：无性生殖的一种类型，指一个母细胞分裂成两个与母细胞相同的子细胞，二分裂发生在许多单细胞有机体中，如原生生物、细菌和裂殖酵母。

And although these new findings do not support Lamarck's overall concept,they do raise the possibility that "epimutations,"as they are called,could play a role in evolution.

虽然这些基因表达的变化可以在细胞分裂时由母代传递给子代细胞，比如肌肉细胞分裂，或者癌细胞增生形成肿瘤，但这些变化在生殖细胞形成时通常会被抹去。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了