- 更多网络例句与核内的有丝分裂相关的网络例句 [注:此内容来源于网络,仅供参考]
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Cell cycle is the cell through a series of orderly changes in the cells to achieve cell growth and proliferation process of cell cycle regulation and individual development, differentiation, growth, regeneration, aging and cancer cells is closely related to eukaryotic cell cycle mitosis two key processes, namely DNA replication and sister chromatid evenly assigned to the sub-cells.
细胞周期是指细胞通过一系列有序的细胞内变化,实现细胞生长和分裂增殖的过程细胞周期的调控与个体发育、分化、生长、再生、衰老以及细胞的癌变密切相关真核细胞有丝分裂周期有两个关键的过程,即DNA的复制和姐妹染色体均衡地分配到子细胞中。
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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。
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Some investigations suggested that cyclins and CDK played an important role in the regulation of endomitosis of megakaryocyte. However, the mechanism of cyclins and CDK in the regulation of endomitosis of fetal megakaryocytes during ontogenesis and the relationship between cyclins/CDK and retardation of endomitosis of fetal mgakaryocyte is totally unknown.
一些研究发现周期蛋白和CDK在巨核细胞核内有丝分裂的调控上起重要作用,然而,周期蛋白和 CDK在胎儿巨核细胞核内有丝分裂调控上所起的作用,及其与胎儿巨核细胞核内复制延迟的关系目前全然不知。
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A dramatic remodeling of interpolar microtubules into an organized central spindle between the separating chromatids is required for the initiation and execution of cytokinesis.
因此为了保证有丝分裂期核内事件的准确进行,在间期,对相关的重要蛋白质的核内稳定性的准确调控尤其重要。
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RESULT: 1.Ouabain act on lens sodium-pump,under the LM,lens anterior capsular membrane discontinuous,epithelium cells clustered,occluding zonule seperated,lens fiber layers fractured.Under the EM,cells totally hollowed,mitochondria swelling,myelin figure appeared.RT-PCR examine the expression condition of αsubunit of sodium pump on mRNA level,α1、α2 and α3-isoform are all decreased.2.Digoxin act on lens sodium-pump,under the LM,lens cell oedema,linkage distructed,extensive exfoliation.Under the EM,plasma appeared little half-transparant hollow region,mitochondria swelling and ridge disappeared. RT-PCR examine,α1、α2 and α3-isoform are all decreased.3.Amphotericin B act on lens sodium-pump,under the LM,lens epithelium cells linked tightly,arranged in-line,lens fiber layers arranged tightly and regularily.Under the EM,abbundant cellular organes,exuberant cells function indicated. RT-PCR examine the expression condition of αsubunit of sodium pump on mRNA level,α1 and α3-isoform are increased significantly,demonstrated isoform-specific action.4D-thyroxine act on lens sodium-pump,under the LM,lens plasmalemma integrated,cells arranged tightly and regularily.Under the EM,nucleus fission appeared,desmosome half-desmosome and tensile microfilaments linked the cells. RT-PCR examine,α2 and α3-isoform are increased, also demonstrated isoform-specific action.5.Vitamin E act on lens sodium-pump,under the LM,lens anterior capsular membrane continuous and smooth,epithelium cells tightly linked,lens fiber layers appearede hollow region occasionally.Under the EM,lateral membrane high density belt appeared,abundant nucleolus. RT-PCR examine,onlyα1-isoform are increased, demonstrated significantly isoform-specific action.6.DMSO act on lens sodium-pump,under the LM,lens anterior capsular membrane slightly thicker,cells linkage partly distructed.Under the EM,plasmalemma denaturation,mitochondria swelling.RT-PCR examine,α1、α2 and α3-isoform are all altered slightly and haven't significant meanning.
结果:1、哇巴因作用于晶状体钠泵后,光镜下晶状体前囊膜断裂、上皮细胞聚积、闭合连接分离、纤维板层裂隙,电镜下全层细胞空泡化、线粒体肿胀出现髓样结构,RT-PCR法检测晶状体钠泵α亚单位α1、α2及α3三种重整异构体在mRNA水平的表达均减弱。2、地高辛作用于晶状体钠泵后,光镜下晶状体细胞水肿、细胞连接破坏、广泛剥离,电镜下胞质见少许半透明空化区、线粒体肿胀嵴消失,RT-PCR法检测晶状体钠泵α亚单位α1、α2及α3三种重整异构体在mRNA水平的表达均减弱。3、两性霉素B作用于晶状体钠泵后,光镜下晶状体上皮细胞紧密连接、线状排列、纤维板层紧密规整,电镜下细胞器丰富、细胞功能旺盛,RT-PCR法检测α1及α3表达显著增强、具有一定的重整异构作用特异性。4、D甲状腺素作用于晶状体钠泵后,光镜下晶状体质膜完整、细胞排列紧密规整,电镜下胞核见分裂像、细胞间有桥粒、半桥粒及张力微丝,RT-PCR法检测α2及α3表达均增强、亦有一定的重整异构作用特异性。5、维生素E作用于晶状体钠泵后,光镜下晶状体前囊膜连续光滑、上皮细胞紧密连接、纤维板层偶见空化,电镜下囊侧膜内有高电子密度带、细胞核仁丰富,RT-PCR法检测仅有α1的表达显著增强、具有极强的重整异构作用特异性。6、二甲基亚砜作用于晶状体钠泵后,光镜下晶状体前囊膜轻度增厚、细胞连接部分破坏,电镜下质膜变性、线粒体肿胀,RT-PCR法检测晶状体钠泵α亚单位α1、α2及α3三种重整异构体在mRNA水平的表达无显著改变。
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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。
- 更多网络解释与核内的有丝分裂相关的网络解释 [注:此内容来源于网络,仅供参考]
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endometrium:子宫内膜 (名)
endometritis 子宫内膜炎 (名) | endometrium 子宫内膜 (名) | endomitosis 核内的有丝分裂 (名)
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endomitosis:核内有丝分裂
多线染色体来源于核内有丝分裂(endomitosis). 对幼虫果蝇唾液腺细胞的染色体分析发现比其他类型的细胞中的染色体粗100倍. 在幼虫发育期间, 这些细胞停止了分裂, 但体积不断增大, DNA继续进行复制,以维持细胞的高分泌活性.
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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),
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endomitosis:[生]核内的有丝分裂
baseplate 基础板, 基板 | endomitosis [生]核内的有丝分裂 | stem mold 梃模(制造高脚杯的梃用)
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endomixis:内融合; 内合 (名)
endomitosis 核内的有丝分裂 (名) | endomixis 内融合; 内合 (名) | endomorph 矮胖子, 内容矿物 (名)
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karyokinesis:核分裂
有丝分裂的过程较复杂,包括核分裂(karyokinesis)和胞质分裂(cytokinesis)两个步骤. 核分裂是一个连续的过程,从细胞核内出现染色体开始,经一系列的变化,最后分裂成二个子核(daughter nucleus)为止. 为了解说上的便利,
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somatic meiosis:体细胞减数分裂
此外某些生物还具有体细胞减数分裂(somatic meiosis)现象,如在蚊子幼虫的肠道中,有一些由核内有丝分裂形成的多倍体细胞(可高达32X),在蛹期又通过减数分裂降低了染色体倍性,增加了细胞数目.
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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.
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somatic synapsis:体细胞联会
以20~50岁年龄组多见.儿童及少年患者12 染色体畸变的遗传分析12.1 染色体结构变异及其遗传学效应12.1.1果蝇唾腺染色体的特性唾液腺染色体(Polytene chromosome) :存在于双翅目昆虫幼虫消化道细胞的有丝分裂间期核内一种巨大的染色体. 唾液腺染色体的特征: (1)巨大性、伸展性: 210-215染色质线平行排列;比中期染色体长100-20
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nucleolar organizer:核仁形成区
在细胞分裂将结束时,核内出现一个到几个核仁,核仁总是出现在次级缢痕的地方,所以次级缢痕也叫做核仁形成区(nucleolar organizer)(图3-4). 细胞的增殖是通过有丝分裂(mitosis)来达成的. 有丝分裂的结果,把一个细胞的整套染色体均等地分向两个子细胞,