核碎裂

Compared with the corresponding BEAS-2B cells, the shapes of cells and nuclears, the shapes and quantity of cell organs were not significantly changed in the 1st, 2nd, 5th passage BEAS-2BNNK cells. The 10th, 15th passage BEAS-2BNNK cells, which had swelled cell and cell organs and abnormal nuclear and enlarged the nucleoli gradually and increased the quantity of the cell organs and activated their function, showed the characteristic of transformation cells. The 20th, 25th passage BEAS- 2BNNKcells, which had obvious aberration of the cell and nucleoli and had cataclasm of nucleoli and decreased cell organs, showed the characteristic of tumor cells.

与BEAS-2B相比较BEAS-2BNNK第1、2、5代细胞及胞核形态、细胞器形态及数量无明显差别；第10、15代细胞出现肿胀，细胞核逐渐变形，出现核畸形，核仁明显增大，边集，细胞器肿胀，数量明显增多，功能活跃具明显的转化细胞特征；第20、25代细胞及胞核明显畸变，出现明显的核碎裂及多个核仁，细胞器明显减少，具明显的肿瘤细胞特征。

Most proerythroblast showed of irregular nuclei, while the Swisscheeseappearance of the heterochromatin was usually found in basophilic and polychromatic erythroblast.

CDAⅠ型的主要超微结构特点为幼红细胞巨幼样增生，其次是中幼阶段核膜损伤和晚幼阶段的核溶解和核碎裂，生物膜系统广泛破坏是CDAⅠ型主病理机制。

Many nuclei have become pyknotic and have then undergone karorrhexis and karyolysis.

许多细胞核发生了核浓缩，接着出现核碎裂和核溶解现象。

The typical apoptotic morphological features appeared in MUTZ1 cells treated with 4 mmol/L VPA for 72 hours. Pyknosis of cells and nuclei, disintegration of nuclear chromatin and apoptotic body could be observed by light microscopy. Aggregation and margination of nuclear chromatin, concentration of plasm, increment of density and chromatin mass of irregular size could be observed by transmission electronmicroscope. The flow cytometric analysis indicated that the VPA could induce cell apoptosis, apoptosis rate increased in dosedependent manner, ratio of cells at G0/G1 phase increased and ratio of cells at S phase decreased in dosedependent manner, the cells were arrested at G0/G1 phase.

结果显示： VPA对MUTZ1细胞的生长抑制作用呈现时间和剂量依赖性；经4 mmol/L VPA处理MUTZ1细胞72小时后，细胞呈现典型的凋亡形态特征，光学显微镜下可见凋亡细胞胞体固缩、核固缩、核碎裂及凋亡小体；透射电子显微镜下可见凋亡细胞核染色质边集、胞浆浓缩、密度增加，胞浆内大小不规则的染色质团块；流式细胞术结果表明，细胞凋亡率随着VPA浓度的增加而逐步增高，G0/G1期细胞比例随着VPA浓度的增加而逐渐增多，S期细胞比例逐渐减低，细胞被阻滞在G0/G1期。

The typical apoptotic morphological features appeared in MUTZ-1 cells treated with 4mmol/L VPA for 72hours. Pyknosis of cells and nuclei, disintegration of nuclear chromatin and apoptotic body could be observed by light microscopy. Aggregation and margination of nuclear chromatin, concentration of plasm, increment of density and chromatin mass of irregular size could be observed by transmission electronmicroscope. The flow cytometric analysis indicated that the VPA could induce cell apoptosis, apoptosis rate increased in dose-dependent manner, ratio of cells at G0/G1 phase increased and ratio of cells at S phase decreased in dose-dependent manner, the cells were arrested at G0/G1 phase.

结果显示：VPA对MUTZ-1细胞的生长抑制作用呈现时间和剂量依赖性；经4mmol/LVPA处理MUTZ-1细胞72小时后，细胞呈现典型的凋亡形态特征，光学显微镜下可见凋亡细胞胞体固缩、核固缩、核碎裂及凋亡小体；透射电子显微镜下可见凋亡细胞核染色质边集、胞浆浓缩、密度增加，胞装内大小不规则的染色质团块；流式细胞术结果表明，细胞凋亡率随着VPA浓度的增加而逐步增高，G0/G1期细胞比例随着VPA浓度的增加而逐渐增多，S期细胞比例逐渐减低，细胞被阻滞在G0/G1期。

Marked changes of apoptosis including condensation of chromatin and nuclear fragmentation were observed very clearly by Hoechst 33258 fluorescence staining and a characteristic "ladder" of DNA fragments was elicited by agarose gel electrophoresis; Western blot analysis revealed that caspase-3 was activated by the loss of caspase-3 proenzyme (32kDa) and the appearance of its 20kDa subunit, and that along with the apoptotic process caspase-3 activity was increased concurrently.

Hoechst 33258荧光染色观察到典型的核浓缩、核碎裂等细胞凋亡的形态学变化，琼脂糖凝胶电泳观察到细胞凋亡时的DNA"梯形"条带；Western blot检测结果表明32kDa的caspase-3酶原被激活，出现20kDa的亚单位活化片段，同时在细胞凋亡过程中，caspase-3活性显著增高。

Results: Neonatal rats in hypoxic-ischemicgroup behaved restlessness, cyanosis, deep and rapid breath, astasia, lethargy, irritation and spasm; There were local pyknosis, fragmentation, dissymmetry, blur or disappearance of nucleoli, raritas of ground substance in left cerebral cortex; but there was no statistic significance in chinese traditional medicine group and sham group. The expression of HIF-1α mRNA in brain tissue of experimental group and chinese traditional medicine group were higher than that in sham group, especially chinese traditional medicine group at 3d; HIF-1α positive cells were found in cerebral cortex and hippocampus. There were more HIF-1α positive cells in experimental group and chinese traditional medicine group and mainly in vascular endothelial cells.

结果 缺氧缺血后大鼠相继表现为烦躁不安、全身发给、呼吸加深加快、站立不稳、嗜睡、激惹或间断发作的痉挛和抽搐；HE染色显示实验组大鼠左侧大脑皮层出现局灶性神经元核固缩，核碎裂，核仁偏位，不清或消失，基质疏松；中药组大鼠脑组织结构基本接近假手术组，无明显水肿和坏死表现；实验组和中药组大鼠脑组织HIF-1α mRNA表达较假手术组明显增加，尤其是中药组实验第3日者；免疫组化显示实验组和中药组各时间点大鼠大脑皮层和海马区均可见不同程度的HIF-1α表达，明显高于假手术组，阳性表达主要在血管内皮细胞，海马和皮层的锥体细胞亦有HIF-1α阳性细胞分布。

The cancer cells are in different differentiation periods: the chromatin of the young cancer cell's nucleus is rich in color and its cytoplasm is basophilous. The young cancer cells don't form into typical glandular cavity; The mature cancer cell is columnar or cubical and its nucleus is located at the base of the cell in gland tube-like arrangement; The decrepit cancer cell stain thin while its nucleus stain dense. The severer's nucleus disintegrate into small fragments. The decrepit cancer cell's arrangement is disorganized, only keeping its glandular shape.

显微镜下癌细胞呈现不同的分化程度：幼稚型癌细胞胞核染色质丰富，胞质嗜碱性，不形成典型腺腔；成熟型癌细胞呈柱状或立方状，细胞核位于细胞基部，呈腺管样排列；衰老型癌细胞胞桨染色变淡，胞核浓染，严重者胞核碎裂成细小碎片，衰老型癌细胞排列紊乱，仅保留腺体样结构轮廓。

By means of the transmission electron microscope we found the typical morphology variation of apoptosis,such as the concentration and side-accumulation of the nuclear chromatin,the fragmentation of the nuclear and the concentration of the cytochylema etc.Cell cycle detected by flow cytometry showed one visible apoptosis peak (20.6%) in front of the peak of G1.The typical ladder was found in the 15 g.L-1 agarose gel electrophoresis of the nucleus DNA.

透射电镜下可见细胞核染色质浓缩、边集、核碎裂及胞质浓缩等凋亡细胞典型的形态学改变；流式细胞术周期分析显示在G1期峰前存在一个凋亡峰（20.6％）；核琼脂糖凝胶（DNA 15 g.L-1）电泳呈梯状。

The main injury of kidney was located in proximal tubular epithelial cell ,it peaked at 12 hours and 24 hours after reperfusion,the sporadic karyopyknosis and karyorrhexis could be seen,but the basement membrane preserved well.48 hours later,the restoration could be seen.7 days later it restored obviously.

肾脏损害主要以近曲肾小管上皮细胞为主，12h、24h损伤达到高峰，可见核固缩、核碎裂，但基底膜保留完好。48h开始出现修复现象。7d后明显修复。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。