染色质

The ultrastructure:monstrous nucleus,ovious nucleole,desmosome-likestructure and surface microvilli.

电镜观察细胞核形状怪异，常染色质为主，核仁明显，细胞器少，可见高尔基器，有桥粒样结构，表面有许多绒毛状突起。

That is, the nucleolus becomes smaller and smaller, the cohesion of the cytoplasm becomes stronger and stronger.

即：生精细胞的细胞核逐渐变小，染色质不断集缩。

Eukaryotic genomes are packaged into a nucleoprotein complex known as chromatin, which affects most processes that occur on DNA.

真核基因组被包装到叫做染色质的一个核蛋白复合体中，它影响了发生在DNA上的大部分过程。

Recent findings that provide mechanistic insight into complex relationship between chromatin modification and gene transcriptional regulation during oogenesis will be discussed.

对卵子发育过程中染色质结构和基因转录调控的表现遗传学变化综述。

The spiny eel , belonging to Perciformes, Osteichthyes, is a kind of little freshwater fish distributed in Southern China. In 1998, Our lab detected XX/XY differentiated sex chromosomes in this specie with karyotypic analysis, and then with chromosomal binding and SC observation, we identified that its two largest metacentric chromosomes were X, Y sex chromosomes in 1999. X, Y chromosomes differ each other not only in the distribution of heterochromatin but also in their shapes, which make them could be recognized directly under the light-microscope without any banding treatment.

刺鳅，属鲈形目、刺鳅科(Perciformes，Mastacembelidae)，是广泛分布于中国南方的小型淡水鱼类。1998年，我室通过核型分析，首次发现该物种具有明显分化的异形性染色体，其性别决定类型为XX／XY型。1999年，本室通过染色体显带、精母细胞联会复合体观察，再次确认刺鳅染色体组中最大的一对中部着丝粒染色体为X、Y性染色体，两者不仅已经出现结构异染色质分布上的不同，同时在外部形态上也存在明显差异，识别特征鲜明，在光镜观察下无需显带即能清晰辨认性染色体。

The authors proposed that heterochromatin change in genome might play an important role in balancing the germplasms between maize and its distant relatve after cross and parthenocarpy.

这种变异不仅存在于表型不稳定的早代孤雌系中，而且还存在于表型稳定的高代系中，造成这种变异的原因可能是因为远缘种质的引入影响到遗传平衡进而引起染色体发生结构重排并引起染色质的变化，这种变化与玉米染色体组中非同源染色体间存在的同源片段和因此造成的减数分裂过程中非同源染色体配对有着直接的关系。

Occasionally, lipoblasts can be seen in lipomas, especially near blood vessels. However, they do not exhibit cytologic atypia/hyperchromasia/pleomorphism.

少数情况下，脂肪母细胞也能在脂肪瘤中看到，特别是近血管区域，但是，它们不显示细胞异型/深染色质/多形性。

Results Activities of SCs in the oxidative injured group decreased compared with the control group. However, these changes were significantly reversed by the IGF-1 pre-conditioning.

结果 与正常组及保护组相比，H2O2处理组细胞具有典型的凋亡形态特征：核染色质浓染、边集，细胞体积缩小，细胞存活率降低；SOD含量明显减少（P＜0.01，MDA含量明显增加（P＜0.01，Bcl-2表达下调；而IGF-1保护组细胞存活率明显升高（P＜0.01，SOD含量较损伤组增高（P＜0.01，MDA含量较损伤组明显减少（P＜0.01，Bcl-2表达明显上调。

In human interphase nuclei Y-chromatin is studied by quinacrine dihydrochloride stain and by fluorescent light source for microscope, both of which are made in Shanghai China.

用国产阿的平染料和显微荧光光源研究了人间期核内的Y染色质。

As we know, SWI/SNF is a global, untargeted chromatin remodeler which influence transcription, it perform gene-specific regulation by interacting with some selective activators. On the other hand, no known DNA-binding domain is found in BEX1. So we come to a conclusion that BEX1 may mediate activators interact with hSNF5, and this result in the transcription of specific sets of genes that control the cell cycle.

由于BEX1本身并未发现能与DNA直接结合，而hSNF5所在的染色质重塑复合体单独存在时作用没有特异性，我们推测，BEX1可能作为接头分子，介导了其它蛋白与hSNF5的作用，导致控制细胞周期相关基因的转录激活或抑制。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。