有丝分裂

基本解释 (translations)

karyokinesis  ·  mitosis  ·  mitoses  ·  caryomitosis  ·  caryocinesia

与有丝分裂相关的网络例句 [注：此内容来源于网络，仅供参考]

Meiotic pachytene bivalents were obtained from porcine testes using prolonged hypotonic treatment combined with high chloroform Carnory's fixative solution. Mitotic metaphase chromosomes were prepared from blood cell culture. Comparative studies on division index and length of pachytene bivalents and mitosis metaphase chromosomes showed that those of the former are 5 times higher and 3.42(1.87～5.98) times longer than the latter, respectively. Chromomere maps of bivalents are more abundant than mitotic metaphase G-bands, while they are correspondent with mitotic early-metaphase G-bands. The result was found by using the chromosome 12 as a sample.

以性成熟公猪睾丸和外周血为材料，采用长低渗、高氯仿卡诺固定液固定和外周血细胞培养制备减数分裂粗线期二价体和有丝分裂中期染色体，通过对二价体和有丝分裂中期染色体分裂指数和长度的比较研究，发现二价体的分裂指数和长度分别是有丝分裂中期染色体的5倍和3.42倍(1.87～5.98)；同时以12号染色体为例，比较了二价体上的染色粒结构带与有丝分裂中期染色体G-带，表明染色粒结构带比中期染色体G-带带纹丰富，而与早中期G-带带纹吻合。

To investigate whether the expression of cdc2 and cyclin B1 in spermatogenic cells during spermatogenesis is actually a temperature dependent event, in situ hybridization, Western blotting and immunohistochemistry analysis were used to study the expression of cdc2 and cyclin B1 in normal and cryptorchid testis. Results showed that heat would differentially hurt male germ cells in different developmental stages during spermatogenesis, especially the pachytene primary spermatocytes. Most of spermatogonia in contralateral cryptorchid testis were not harmed fatally by heat as yet, indicating that spermatogonia could resist to beat to a certain extent. In this case spermatogonia could develop to pachytene/diplotene primary spermatocytes, but they could not acquire the ability to complete the transition from mitosis to meiosis, and then appeared to go through apoptosis. Therefore, we could not find the descendants of meiosis: secondary spermatocytes and round spermatids, elongated spermatids and spermatozoon. The abdominal temperature had no significant influence on the transcription of cdc2 and cyclin B1 in the spermatogonia and pachytene/diplotene primary spermatocytes. In normal rabbit testis, cyclin B1 increased in the pachytene/diplotene primary spermatocytes before meiosis and reached its peak in the spermatids.

为了解精子正常发生过程中cdc2和cyclin B1表达的低温依赖性，我们利用原位杂交和免疫组化等方法，研究了正常和隐睾精子发生过程中cdc2和cyclin B1的转录和翻译调控活动，结果表明：（1）热对各阶段的雄性生殖细胞都有损害，粗线期的初级精母细胞尤为敏感，实验性隐睾内的精原细胞尚未完全受到"致命"影响，说明精原细胞对热有一定的耐受性，但即使成为粗线期／双线期初级精母细胞，却未能获得由有丝分裂过渡到减数分裂的能力，呈现不同程度的凋亡，所以在整个切片中找不到源自减数分裂的产物----次级精母细胞、圆形精子细胞，更谈不上长形精子细胞和精子的形成；（2）腹腔高温未明显地影响隐睾精原细胞和粗线期/双线期初级精母细胞中cyclinB1和cdc2的转录，说明高温并不是通过影响cyclin B1和cdc2的转录活动而导致生精过程阻断的；（3）正常兔睾丸组织中，〓在精原细胞和粗线期／双线期精母细胞中均有表达：cyclin B1蛋白在减数分裂前期的粗线期／双线期初级精母细胞中的表达量增加，于变态末期的精子细胞中达高峰。

Endomitosis The duplication of chromosomes without division of the nucleus, causing polyploidy and leading to an increase in nuclear and cytoplasmic volume.

核内有丝分裂：在细胞核不分裂的情况下进行染色体复制，产生多倍体并使细胞体积增大的一种有丝分裂形式。

The results implied that cell karyokinesis could be promoted at low concentration and be restrained at high concentration.

在一定低浓度条件下，蚕豆根尖细胞有丝分裂指数增高，高浓度下有丝分裂指数降低，意味着低浓度可促进细胞有丝分裂，高浓度则会抑制细胞有丝分裂。

General characteristics of cells, its chemical constituents ( protein, nucleic acid, carbohydrate, lipid), cell structure , cell cycle, cell division, four kinds of tissues (epithelial, connective, muscular, and nervous), organ, ten organ systems (dermal, skeletal, muscular, digestive, respiratory, circulatory, excretory, endosecretory, nervous, and reproductive).

细胞的一般特征，细胞的化学组成(蛋白质，核酸，糖类，脂类)，细胞的结构，细胞周期，细胞分裂(无丝分裂，有丝分裂，减数分裂)，四大组织(上皮组织，结缔组织，肌肉组织，神经组织)，器官，十大系统(皮肤系统、骨骼系统、肌肉系统、消化系统、呼吸系统、循环系统、排泄系统、内分泌系统、神经系统和生殖系统)。

Mitogen-activated protein kinase cascade and maturation-promoting factor play very important roles during meiotic maturation and fertilization of oocyte.

目的探讨有丝分裂促进因子和丝裂原活化的蛋白激酶在小鼠受精卵第一有丝分裂期中的作用及相互关系。

There are four kind of isoforms of endothelin in human and other mammals named ET-1, ET-2, ET-3 and ET-β, which are slightly different in construction and pharmacological effect. In human beings, ET-1 is the dominative subtypes. ET-1 remains in blood at a low level about 5ng per liter on physical state. It is synthesized, stored, released and metabolized locally. The half-life of ET-1 is about 1 hour. ET-1 is the most potent vasoconstrictive factor till now, and it is more functional in vein than in artery. In vascular bed, there are two kind of ET receptors. Type A mainly located in smooth muscle cells, whereas type B in endothelial cells. The latter can stimulate intimal hyperplasia via a parasecretion way and activate some oncogenes such as c-fos and c-myc and then enhance their expression. These alterations result in constriction of blood vessels, thus the SMC steps into proliferate state from silent state.

人及哺乳动物体内有四种结构及药理学性质略有差异的异物体，分别为ET-1、ET-2、ET-3、ET-β，而在人主要是ET-1，在生理条件下，ET-1在血浆中含量较低，约为5ng〓，故ET-1不是一个循环激素，而是局部合成释放，局部起作用的活性物质，半衰期约1小时，ET-1是目前已知的最强的血管收缩剂，对静脉的作用比动脉强，在血管床，ET受体有A、B两型，A型主要分布在平滑肌细胞，B型主要分布在内皮细胞，它可以通过旁分泌途径刺激内膜增生，具有有丝分裂原效应，可以激活某些癌基因如C-fos、C-myc使其表达增强引起血管收缩，使静止期SMC进入增殖期，还可以通过信号传导途径，与bFGF、GTF-β、PDGF等生长因子协同作用，起共有丝分裂原作用。

The events occurring during these stages differ in meiosis and mitosis, notably in that bivalents (pairs of homologous chromosomes) are formed in meiosis, whereas homologous chromosomes remain separate in mitosis.

在减数分裂和有丝分裂中，前期发生的事件是不同的，尤其是二价染色体区别最为明显，在减数分裂中形成，而在有丝分裂中同源染色体是分离的。

Objective To study on the function of mitogen- activated protein kinase and mitosis- promoting factorin the first mitosis of mouse fertilized eggs and the relationship between them.

目的探讨有丝分裂促进因子和丝裂原活化的蛋白激酶在小鼠受精卵第一有丝分裂期中的作用及相互关系。

Insulin-like growth factor I and II, which are mitoses,acting through type 1 IGF receptor, have mitogenic and anti-apoptotic effects on many kind of cells, also on epithelial and stromal prostatic cells.

胰岛素样生长因子I和II均为强有丝分裂源，通过与胰岛素样生长因子I类受体结合，对多种细胞发挥促有丝分裂及抗细胞凋亡作用，同样对前列腺基质及上皮细胞具有促有丝分裂及抗细胞凋亡作用。

与有丝分裂相关的网络解释 [注：此内容来源于网络，仅供参考]

endomitosis：有丝分裂

(1) 核内有有丝分裂(endomitosis): 核内染色体复制后并分裂,但不是形成子核,仍是一个核,结果加倍了的这些染色体都留在一个核内. (2) 核内染色体连续复制,但其着丝点并不分裂,因此形成 多线染色体(polytene chromosome),

mitosis：有丝分裂

在观察了蝾螈细胞分裂现象的基础上,弗莱明于1882年提出了"有丝分裂"(mitosis)这一术语. 但从更详细的资料来看,有丝分裂的发现不是一蹴而就的,人类对有丝分裂的认识是一系列科学发现的综合结果. 最早对有丝分裂的认识开始于发现细胞核与细胞分裂有关.

mitosis：有丝分裂期

2)M phase: 有丝分裂期(Mitosis)4、M期:M期即细胞分裂期,真核细胞的细胞分裂主要包括两种方式,即有丝分裂(mitosis)和减数分裂(meiosis). 遗传物质和细胞内其物质分配给子细胞.

mitogenetic factor：有丝分裂发生因子

mitogen 有丝分裂原 | mitogenetic factor 有丝分裂发生因子 | mitosis 有丝分裂

mitotic index：细胞有丝分裂指数

mitotic 有丝分裂的 | mitotic index (细胞)有丝分裂指数 | mixable 可混溶的

mitotic division：有丝分裂

mitotic cycle 分裂周期 | mitotic division 有丝分裂 | mitotic poison 有丝分裂毒

promitosis：初级有丝分裂 前有丝分裂

promissorynote 债务人的期票 | promitosis 初级有丝分裂 前有丝分裂 | promnesia 记忆错误

mitogenic factor：有丝分裂因子,细胞有丝分裂促进因子,致有丝分裂因子

mitocondrial sheath ==> 线粒体鞘 | mitogenic factor ==> 有丝分裂因子,细胞有丝分裂促进因子,致有丝分裂因子 | mitosis promoting factor ==> 细胞有丝分裂促进因子

mitoses：(复数)有丝分裂

mitomycin 丝裂霉素 | mitoses (复数)有丝分裂 | mitosis 有丝分裂

mitotic crossing over：有丝分裂交换

在正常情况下分裂分离和重组都是在减数分裂中发生的,但实验证据表明在有的有机体中交换也可发生在有丝分裂中,这叫做体细胞交换(somatic crossing over)或有丝分裂交换(mitotic crossing over).