细胞器

The proliferation of HFE-145 cell is inhibited during simulated weightlessness on a clinostat for 12 h.

回转器模拟失重使胃粘膜上皮HFE-145细胞在12 h时出现了细胞周期阻滞和增殖抑制。

In present study, we discussed the effects of cell microfilament on the activity of collagen type I alpha 1 chain gene (COL1A1) promoter under microgravity simulated by clinostat and/or cytochalasin B as microfilament depolymerizer in the established EGFP-ROS cell line using the method of fluorescence semi-quantitative analysis and the fluorescent stain of microfilament.

但微重力对相关基因调控的影响知之甚少，本研究以构建的基因工程细胞株为对象，以回转器模拟微重力效应，利用增强型绿色荧光蛋白（enhanced green fluorescence protein，EGFP）荧光半定量和细胞微丝荧光染色分析技术，探讨回转模拟微重力条件下，细胞微丝系统对I型胶原α1链基因（collagen type I alpha chain 1，COL1A1）启动子活性的影响。

In present study, we discussed the effects of cell microfilament on the activity of collagen type I alpha 1 chain gene ( COL1A1) promoter under microgravity simulated by clinostat and/or cytochalasin B as microfilament depolymerizer in the established EGFP-ROS cell line using the method of fluorescence semi-quantitative analysis and the fluorescent stain of microfilament.

本研究以构建的基因工程细胞株为对象，以回转器模拟微重力效应，利用增强型绿色荧光蛋白(enhanced green fluorescence protein，EGFP)荧光半定量和细胞微丝荧光染色分析技术，探讨回转模拟微重力条件下，细胞微丝系统对I型胶原a1链基因(collagen type I alpha chain 1 gene， COL1A1)启动子活性的影响。

Trochoidea vegetative population. Cysts were monthly collected by sediment traps and TFO gravity corer. S. trochoidea vegetative cells, water temperature, salinity, dissolved oxygen were measured throughout the annual cycle.

为了解该藻孢囊形成和萌发动态及其对营养细胞种群动态的影响，2001年1月—2002年1月在大亚湾澳头海域用沉积物捕捉器及TFO重力采泥器对其孢囊进行每月一次的周年监测，同时对浮游植物、水温、盐度、溶解氧等也进行了监测。

Zeng Feng said that the osteoblasts dominance of one party, the failure of osteoclasts, the absorption can not be old, broken bones, the bones become brittle and hard,"once the forces encountered, as demagnetizer by the impact, answered broken Crack."

曾国峰说，成骨细胞一方独大，破骨细胞失灵，无法吸附老旧、坏掉的骨头时，骨头会变得硬而脆，「一旦碰到外力，就像磁器受到撞击，应声碎裂」。

In the present review, we focus on some of the recent advances and some key developmental events revealed in the fertilization process, including the role of the egg apparatus in guiding pollen tube orientation, sperm cell movement to their targeting cells, interaction between gametes, egg cell activation, and onset of embryogenesis and endosperm development.

本文着重讨论受精作用的若干重要发育事件，包括受精前卵器细胞对花粉管向胚珠定向生长的近距离引导信号，精子的靶向运动，精、卵细胞相互作用和配子融合后卵细胞的激活与中央细胞发育的启动等。

There are commonly eight nuclei in the embryo sac: the egg apparatus at the micropylar end, made up of an gee nucleus and two synergid nuclei; three antipodal cells at the oppsite chalazal end that probably aid embryo nourishment; and two polar nuclei in the center that fuse to form the primary endosperm nucleus.

通常胚囊中有8个核，卵器在珠孔端，由卵和两个助细胞组成；3个反足细胞在合点端，可能为胚胎提供营养；胚囊中央有2个极核，融合在一起形成最初的胚乳核。

Potentially polyembryonic megagametophytes at maturitycontain either a conventional 3-celled egg apparatus(92.6% of megagametophytes).or contain the supernumeraryeggs forming either a 4-celled (5.2%) or 5-celled(2.2%)egg apparatus.

二卵卵器中卵细胞和类卵细胞大都并列位于助细胞合点极上方；三卵卵器中，合点极两个卵细胞结构并行排列，其珠孔极侧下方是另一个卵细胞结构。

Embryological observations on Crawfurdia delavayi, Tripterospermum cordatum, T. chinense, Gentiana striata and Pterygocalyx yolubilis show that the group under study is greatly diverse in differentiation and development of anther wall, type of ovule and placentae, synergid and antipodal cell in embryo sac, testa and embryogeny etc. The embryological characters are different among Crawfurdia, Tripterospermum and Gentiana Sect.

胚胎学 本文对披针叶蔓龙胆C.delavayi、双蝴蝶T.chinense、峨眉双蝴蝶T.cordatum、条纹龙胆G.striata和翼萼蔓P.voiubilis作了较详细的胚胎学研究，这些类群在花药壁的分化和形成、胚珠和胎座类型、卵器中的助细胞和反足细胞、种皮以及胚发育等特征上存在差异，并且在胚胎学特征上各自拥有原始和进化的性状。

It forms when developing cells in the retina -- the eye's main light sensor -- go haywire and start reproducing out of control.

当视网膜——眼球的主要光感器上的分化细胞变得杂乱无章并开始增殖失控时视网膜母细胞瘤就形成了。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。