细胞分裂

Want to know, the person's skin can be divided into three-layer of cuticular, dermal, subcutaneous tissue about; All maintaining the limits that tastes generation action is in only cuticular layer, in thin thin divided in the cuticular layer that is less than one centimeter 4, quintuplicate cell, be located in the bottommest for base layer, full vivid cell can grow ceaselessly reach dissension, slowly when upgrade is advanced, the cell can squash gradually, at the same time evaporate, nutrient, until most the corneous layer outside, already was flowing do not have the corneous layer cell of life however.

要知道，人的肌肤约可分成表皮、真皮、皮下组织三层；所有保养品产生作用的范围都仅在表皮层，在薄薄不到一公分的表皮层中分了四、五层的细胞，位于最底部为基底层，布满的活细胞会不断生长及分裂、慢慢往上推进时，细胞会渐渐变扁，同时失去水分、养分，直到最外的角质层，就已是平滑却没有生命的角质层细胞了。

The difference of survivin expression intensity was statistically significant (P.05). Conclusion: A suitable-expression of survivin in normal early gestation villi may be crucial for embryo karyokinesis and cell proliferation. An over-expression of survivin in GTDs may be an important role in their oncogenesis.

适度survivin是正确完成胚胎细胞有丝分裂和细胞增殖的必要条件，因survivin的过表达引起的细胞凋亡阻滞在妊娠滋养细胞疾病的发生发展过程中可能起重要作用。

The luminescence intensity of suspended immune cells (1×10〓 cells/ml) from peripheral blood, anterior kidney and spleen of grass carp, which were from two groups immunized with being injected Aeromonas hydrophilia and unimmunized respectively, were detected by means of BPCL4 Intelligentized Ultraweak Luminometer, the datum that were dealt with statistics demonstrated that luminescence intensity of the cells from all kinds of immune organs and blood were intensified after the fish were immunized in two weeks and the luminescence intensity from anterior kidney cells was the highest, mitogens had the enhancing effects. Luminol could strengthened luminescence intensity.

把未免疫的和经过嗜水产气单胞菌注射免疫的草鱼外周血、前肾、胸腺和脾脏以及它们的悬浮细胞（密度控制在1×10〓个细胞／ml左右）分别用BPCL4智能化微弱发光测量仪测量各组的发光强度，结果显示：草鱼各类免疫器官与细胞在免疫两周后发光强度增加，肾细胞的发光强度最大；有丝分裂原具有增强作用；化合物鲁米诺能提高发光强度。

Antipodal cells The three haploid cells found in the embryo sac of seed-bearing plants that migrate to the chalaxal end of the sac farthest from the micropyle.

反足细胞：胚囊三次分裂形成卵细胞，助细胞和极核等，其中位于合点端的三个单倍体细胞称反足细胞。

The immatured and dividing erythrocyte were found. The small lymphocytes with pseudopod and large lymphocytes with the villus were observed also. In addition, the monocyte, neutrophil and thrombu cells were recognized by different shapes of nucleolus.

实验还观察到处于分裂状态的红细胞、细胞表面有伪足样胞突的小淋巴细胞和细胞表面有许多微绒毛突起的大淋巴细胞、核呈多种形态的单核细胞和中性粒细胞及不同形态的血栓细胞等。

Vascular endothelial growth factor is an important angiogenine. There is accumulating evidence shows that expression of VEGF in mature chondrocyte can promote cell redifferentiation and caryocinesia activity. VEGF plays a key role for chondrocyte to survival and proliferation during the chondrogenesis.

对成熟软骨细胞分泌表达蛋白的研究发现，软骨细胞表达一定水平的VEGF以提高软骨细胞有丝分裂活性并促进其再分化，在软骨发生发育过程中，对软骨细胞的存活与增殖起着重要的作用。

Lymphoid stem cells can produce a few, but not all, kinds of blood cells. Finally, cells that only produce identical copies of themselves are called unipotent. Like skin cells, when they divide, they only make more skin cells.

淋巴干细胞可不像造血干细胞那样能造出所有血液类型的细胞，它们只能创造复制出自身相同的细胞，比如皮肤细胞，当它们分裂的时候，只能够制造皮肤细胞，我们把这些干细胞叫单一干细胞

The system was able to help androgone in testis tissue go through meiosis in vitro without addition of testos-terone by providing necessary conditions for differentiation of androgone.Key words: testis;tissue culture;in vitro spermatogenesis;transmission electron microscopy;HE staining

证实，在没有添加睾酮的情况下，此培养体系能够提供睾丸组织块生精细胞分化所需要的条件，使非精子细胞类生精细胞减数分裂为精子细胞。

The reproductive development process of birch was described as follows: Male inflorescences extended from apical bud in early June. In later June, stamen primodium was differentiated in the bract of male inflorescence and the differentiation of bract was generated in female inflorescence. During July, anther layers and archesporial cell were differentiated in anther, then archesporial cell developed into mother microspore cell. Pistil primodium came into being at the same time. In early part of August the meiosis of mother microspore cell started. In later August, mono-nucleus microspore was formed. After September, both male inflorescence and female inflorescence were dormant.

白桦的生殖生长发育过程如下：6月初，雄花序从顶芽中生长出来。6月中下旬，雄花序苞片上分化出雄蕊原基，雌花序分化出苞片。7月，雄花花药分化出花药壁和孢原细胞，孢原细胞演化为小孢子母细胞，雌花序苞腋处分化出雌蕊原基；8月中上旬，小孢子母细胞减数分裂，8月下旬形成单核小孢子；9月后雄花序以单核小孢子状念越冬，雌花序以雌蕊原基状念越冬。

Whereas, the tapetum of Zhenshan 97A disaggregated at the pollen mother cell stage, the nuclear membrane and the cell membrane disaggregated, the phenomena continued to the binucleate pollen stage. The cytoplasm of the tapetum cells of Zhenshan 97A deposited a few Ca^2＋ precipitates at the pollen mother cell stage.

珍汕97A绒毡层细胞从花粉母细胞时期开始，细胞质内有少量颗粒状的Ca^2＋沉淀；减数分裂时期，绒毡层细胞的内切向壁表面有大量大颗粒的Ca^2＋沉淀；单核花粉时期绒毡层细胞周围集聚一层Ca^2＋沉淀。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐