细胞核

Enucleating the nuclei of recipient oocytes accurately is one of the key techniques in nuclear transfer research. Enucleation of mouse MⅡoocytes can be performed under an inverted microscope equipped with Normarski or Hoffmann optics.

准确去除受体卵母细胞的细胞核是核移植研究的关键技术之一，在装备有Normarski 或Hoffmann 光学镜头的倒置显微镜下可以准确去除小鼠MⅡ期卵母细胞的细胞核。

Under the transmission election microscope, we had observed that the state of oocytes arid the cumulus cells around them was tightness, and there were plenty of long and thin microvilli playing the role of connection in the enwrapping. The shape of cumulus cells nucleus was ovate, and the longer and shorter diameters of the cumulus cells were 4.250±0.042μm and 2.750±0.07 μm respectively. The zona pellucida was well proportioned and tightly linking with oocyte. There were great deals of multi-crista mitochondria, lipid droplet and vacuolus. The mitochondria longer and shorter diameters were 0.600±0.106μm and 0.490±0.117μm. Granular nucleoplasma distributed very well in the cell nucleus.

电镜下，卵母细胞外的卵丘细胞紧紧包裹卵母细胞，且与卵母细胞之间有大量细长的微绒毛相联系；卵丘细胞核呈卵圆形，其长径为4250±0.042μm，短径为2.750±0.071μm；透明带均匀，与卵母细胞结合紧密；在皮质区集中分布大量的多峰型线粗体、脂滴和空泡，线拉体长径为0.600±0.106μm，短径为0.490±0.117μm；细胞核中颗粒状的核质分布非常均匀。

The myoblasts are the precursor of the maturated muscle cells, while the satellite cells are a kind of mononucleus cells which have the characteristics and function of the myoblasts. The satellite cells participate in the growth of skeletal muscle, the repair after injury of the muscle and provide nuclei to the maturated muscle for the normal alternation of cell nuclei. They are very important to the maintenance of the function of skeletal muscle.

成肌细胞为成熟肌细胞的前体细胞，而肌卫星细胞则是成熟骨骼肌组织中具有成肌细胞特征和功能的一类细胞，参与骨骼肌的生长、损伤后的修复以及为正常骨骼肌细胞核的更替提供细胞核，对骨骼肌正常功能状态的维持很重要。

DNA is a molecule that stores coded information. Another important nucleic acid—RNA—works in conjunction with DNA to bring about protein synthesis in cells.

DNA主要存在于细胞核内的染色质中，线粒体和叶绿体中也有，是遗传信息的携带者；RNA在细胞核内产生，然后进入细胞质中，在蛋白质合成中起重要作用。

Every cell with a nucleus has chromosomes that carry genes.

每个细胞都有一个细胞核，细胞核中的染色体携带有遗产基因。

The results were:① The number of pCREB immunoreactive neuclei and total amount of pCREB in the subnuclei of rat amygdala, Dentate gyrus and Cornu Ammonis 3(CA3) were increased after FS.

在DG颗粒细胞层内，对照组的pCREB阳性细胞核数目很少，成线状散在分布；而FS后pCREB阳性细胞核的数目明显增多，成带状密布于整个DG颗粒细胞层。

Results During the committed differentiation, the expression of calmodulin was distributed in and around the cell nucleus.

结果在神经干细胞定向分化为神经元的过程中，钙调蛋白于细胞核及核周呈阳性表达，随分化神经元的生长细胞核阳性表达逐渐减弱而胞浆增强，同时可见阳性反应物伸入树突及轴突。

Diseased cobias were collected from some net-cage farms at Hsiqu Liouchiou Island, next to Dunggang, Taiwan. Some little nodes appeared on surfaces of their fins and skins. When the symptom became serious, they looked like sarcomas. Almost every organ, including liver, spleen, kidney, fin, heart, stomach, intestine of a hard-sick cobia were dealt through the following processes:fixation, section and staining. Only at the connective tissues of fins and epithelium did we find hypertrophy cells which own big nuclei and inclusion bodies around the nuclei.

中文摘要本实验自屏东小琉球采集某家养殖业者箱网网中的罹病海鲡，外观上，鳍与部分体表出现结节状之小颗粒，严重时，呈现瘤状肉柄，取其各部位组织包括：肝脏、脾脏、肾脏、鳍、心脏、胃、肠等进行固定、切片及染色，发现唯有於鳍与皮肤部位之结缔组织细胞，明显可见肥大之现象，肥大之细胞拥有巨大细胞核与围绕著细胞核的包涵体网状结构，由於肥大细胞之堆叠，导致鱼体之鳍与一些表皮部位有颗粒状的「结节」存在。

After division in conidial cell, the nuclei entered into germ tube and divided repeatedly, and therefore the number of nuclei in germ tube variably multiplied. The mitosis of F. graminearum has four phases.

观察表明，分生孢子细胞为单核，细胞核在分生孢子细胞内分裂后进入芽管，在芽管内进行多次分裂，使芽管内细胞核数目不断变化。

The results showed that silkworm mago nashi expressed in both tissues. In gonads, there is a stronger signal in nuclear than cytoplasm.

结果表明，家蚕mago nashi基因在生殖腺和丝腺的细胞核和细胞质中均有表达，且在生殖腺细胞核中的表达强于细胞质中。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。