查询词典 chromatin

Do they exist as microdomains of heterochromatin, or are they some other form of repressive chromatin?

但是在活跃的基因中也可发现沉默基因的存在，这是否因为沉默基因存在于异染色质的 microdomain 还是他们以其它染色质的形式存在呢？

Two years ago, components of the RNA silencing machinery were shown to be absolutely required for forming heterochromatin, a chromatin state that silences DNA, suggesting a new rule in biology.

两年前，有研究表明RNA沉默机器在形成异染色质——无转录活性的非活动染色质——的过程中是必需的，这也暗示出生物学中存在的新"规则"。

HIRA may function in regulating chromatin structure, nucleosome reassembly and cell cycle progression by the interactions of its different domains with different proteins.

HIRA可通过其不同的结构域与不同的蛋白质相互作用，来参与调节核小体的组装、染色质的结构及细胞周期的进程等。

Our data suggest that these histone modifications may act cooperatively to prepare chromatin for transcriptional activation.

我们的数据表明，这些组蛋白修饰可能共同作用于染色质的转录激活。

Systemic investigation about chromatin elimination and introgression of donor in wheat somatic hybridization were progressed in this research.

对小麦体细胞杂交机制进行深入研究将有助于体细胞杂交技术在小麦育种中的应用，但是目前尚无相关报道。

Many methods have been produced and used in detection of rye chromatin introgression in wheat, including the morphological, cytological and molecular markers.

黑麦染色质的检测是小麦染色体工程育种研究的重要内容，包括大量形态学，细胞学，蛋白质，和分子标记等方法被应用在跟踪染色质的导入之中。

NGF had obvious cytotoxicity on these cell lines ,which shows to be dose-dependent, especially for MGC-803 and BEL-7404 ,their IC_(50) value at the 24~ hours are 49.9mg/L and 55.46mg/L ; Main features of apoptosis under fluorescent microscope include reduction in volume,nuclear chromatin condensation, intensification under jacinth fluorescence; The early apoptosis rate of pristine cells which detected by FCM increases with NGF dose increasing.

2NGF对4种人肿瘤细胞均有细胞毒性作用，且呈剂量依赖关系，尤其是对MGC-803和BEL-7404的抑制作用更强，作用24h的IC50值分别为49.9mg/L和55.46mg/L，荧光显微镜下可观察到MGC-803凋亡细胞的主要特点为：细胞体积缩小，染色质固缩，橘红色荧光增强；流式细胞仪检测到MGC-803细胞的早期凋亡率随NGF浓度的增高而增加，各浓度组与对照组的早期细胞凋亡率比较有明显差异(P＜0.01)。

Morphologically,the tumor cells grew in a diffuse pattern and were small to medium in size,with scant cytoplasm,round or oval nuclear,exquisite chromatin,and frequent karyokinesis.

结合文献对2006 — 2007年中国医科大学口腔医学院收治的3例口腔黏膜EMS的临床表现、组织形态学特点、免疫组化及治疗和预后进行分析。

Under optical microscope, the cell of NS arrayed as nest, the nuclear was big, deep-stained, thickened-karyotheca, chromatin granulated, Pathologic karyokinesis can be seen.

DDP组癌巢周围可见少量纤维组织增生、局灶性坏死，并可见炎细胞浸润；LNT组镜下见少量细胞凋亡，凋亡细胞变小，变圆，核固缩，胞浆浓缩，染色加深，凋亡细胞周围未见炎症反应；LNT+DDP组与LNT组镜下大体相同，但可见到较多量的凋亡细胞。

Each group with drug had effect on inhibiting Lewis lung cancer tumor,LNT DDP had the best effect,46.2%,the rate of inhibitory effect of LNT、DDP was 35.6%、39.7%respectively.3.Under optical microscope,the cell of NS arrayed as nest,the nuclear was big,deep-stained,thickened-karyotheca,chromatin granulated,Pathologic karyokinesis can be seen.

DDP组癌巢周围可见少量纤维组织增生、局灶性坏死，并可见炎细胞浸润；LNT组镜下见少量细胞凋亡，凋亡细胞变小，变圆，核固缩，胞浆浓缩，染色加深，凋亡细胞周围未见炎症反应；LNT DDP组与LNT组镜下大体相同，但可见到较多量的凋亡细胞。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。