细胞结构

These three D-type cyclins share high identity and possess similar function.

这三种D型cyclins在结构上具有很高的同源性，而且都能促进细胞G1期推进，也具有相似的细胞周期调控功能。

Its aim is to determine how tissues are organized at all structural levels, from cells and intercellular substances to organs.

它的目的是要确定从细胞、细胞间的物质到各个器官的所有结构层次是如何组织起来的。

A certain spot in the gastrula begins to act on surrounding cells, thus inducing fast cell division, local expansion, folding, invagination, tubular structures, inclusions, etc.

在原肠胚里某一斑点开始在周围的细胞行动，因此导致快速的细胞分裂、地方扩展、可摺叠、反折处、管状结构、胞吞等。

The degradative phase of keratinization is characterized by the disappearance of cell organelles and the consolidation of all contents into a mixture of filaments and amorphous cell envelopes.

角质化降解阶段的特征是细胞器消失，细胞内所有结构固缩为丝状和不定形包膜物质。

Objective To develop an OA kneepad and explore its mechanism and efficacy on the prevention and treatment of osteoarthritis of the knee through observing the effects of OA kneepad on cytokines, matrix-dissolution, hyaluronic acid, oxygen free radical metabolism, articular cartilage micro-structural changes, cell proliferation and apoptosis.

目的 研制OA护膝，并通过观察OA护膝对骨性关节炎细胞因子、基质溶解素、透明质酸、氧自由基代谢、关节软骨宏微观结构变化和细胞增殖、凋亡的影响，探讨其防治膝骨性关节炎的机制及疗效。

Paraffin section technique was applied in the study of the development of the seed coat of Pinus kwangtungensis. The results showed that the development of seed coat follows with the development of the megaspore mother cell. In the development of female gametophyte, a thin, dense and dark layer of cells formats around the female gametophyte.

运用石蜡切片法，在透射电子显微镜和光学显微镜下观察华南五针松种皮的形态结构和发育，用PAS反应显示细胞内淀粉粒分布，研究细胞内淀粉粒的含量。

Internal organization shows a wide photosynthetic mesophyll layer permeated by veins and bounded by an epidermis.

内部结构显示，叶脉穿过进行光合作用的叶肉层，叶肉细胞的外侧为扁平的表皮细胞。

Deserticola showed polarity, with the micropyle cells being smaller than the chalazal ends and differentiated into white radicle-like organs.

肉苁蓉种胚具有明显的极性，珠孔端细胞小于合点端，珠孔端细胞分化、生长并产生白色的类胚根状结构。

Pollen grains germinated soon after pollination. Pollen tubes grew first into the intercellular space of branched penniform stigma and then through the intercellular space of transmitting tissue into the top of the ovary, further penetrating the ovary wall and primine to the micropyle. Green fluorescence was found in both pollen and pollen tubes.

结果表明：授粉后，花粉随即萌发，花粉管进人羽毛状柱头分支结构的细胞间隙，继续生长于花柱至子房顶部的引导组织的细胞间隙中，而后进入子房，在子房壁与外珠被之间的缝隙中向珠孔方向生长，花粉与花粉管均具有明显的绿色荧光。

This method is simply, can better reflect blood cell membrane microstructural characteristics of cell distribution state.

方法简单，能较好的反映血膜中细胞分布状态的微观组织结构特征，是血膜中细胞"密集子"表达定征的一种有效方法

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。