细胞核

After HIFU irradiation, the histopathological changes of lesions of liver and kidney mainly characterized as completely coagulative necrosis, cell debris, pyknotic nuclei.

HIFU损伤后，肝脏和肾脏治疗区的组织病理变化主要表现为细胞的完全性坏死，细胞结构完全破坏，胞浆均质状，细胞核变形、碎裂、固缩、溶解。

Results:Expression of CD3、CD4 in stimulated PBLs was about 10 percent more than those eithout stimulation Nucleus pyknotic、border gathering and collapse were found in hepatoma cell, which showed typical apoptosis.

结果：CD3、CD4分子表达高于刺激前约10%，肝癌细胞出现凋亡，细胞核固缩、边聚、裂解。

Results The nucleus morphology of the hepatocytes was abnormal ,the nucleus was pyknotic, the mitochondria crista was broken. The endoplasmic reticulum was reduced and swelled.

结果：实验组肝细胞核形态异常、固缩，线粒体脊断裂，内质网减少且肿胀，毛细胆管扩张，内有胆泥淤积。

Results:①The amount of human colon carcinoma cell line SW480 treated by quercetin decreased. The morphology of partial SW480 cells was shrunk volume, integrated cell membrane, condensed cytoplasm, pyknotic chromatin, nuclear fragmentation. Apoptotic Corpuscles were found by electron microscope.②MTT colorimetric assay showed quercetin inhibited the growth of human colon carcinoma cell line SW480 in a time- and dose-dependent manner when the concentration of quercetin was 30、60、90μmol/L.③Flow cytometry analysis showed the cell cycle of SW480 cell was restricted in G1/S. G0/G1 phase rate increased and S phase rate decreased with increasing concentration of quercetin and time lasting.④ Zymogram analysis assay showed the secretion of matrix metalloproteinases in human colon carcinoma cell line SW480 treated by quercetin decreased. With increasing concentration of quercetin, the secretion of MMP-2 and MMP-9 decreased.⑤Immunohistochemistry method demonstrated the position expression of Cathepsin-D in SW480 cell was suppressed by quercetin in a time- and dose-dependent manner.

研究结果：经槲皮素处理的人结肠癌SW480细胞数量减少，部分细胞体积缩小，细胞膜完整，胞浆浓缩，核染色质固缩，细胞核碎裂，形成凋亡小体；MTT法检测显示当作用浓度为30μmol/L~90μmol/L时，槲皮素对人结肠癌SW480细胞的生长有抑制作用，其抑制作用随着作用浓度的增加和作用时间的延长而增强；流式细胞学发现槲皮素主要作用于人结肠癌SW480细胞周期的G1/S期，大部分细胞被阻断于S期，随药物浓度的升高和作用时间的延长，G0/G1期细胞比例逐渐增加，S期细胞比例逐渐减少；酶谱分析法检测显示不同浓度的槲皮素能够抑制人结肠癌SW480细胞分泌MMP-2及MMP-9，随浓度的升高，MMP-2及MMP-9的分泌量减少；免疫组织化学法显示不同浓度的槲皮素处理人结肠癌SW480细胞后，Cathepsin-D的表达随药物浓度的升高和作用时间的延长而降低。

Light microscope inspection in MAN, DXM and BC groups showed lesse ned brain edema, slight increase of perivascular space, and occasional nerve ce ll pyknotic nucleus.

MAN，DXM，BC组脑组织水肿程度较B E组减轻，仅见少量的血管周围间隙增宽，偶有神经细胞核固缩，DXM组无神经细胞空泡样变性。

AMs that collected, pured and cultured with contine method were stimulated by LPS of different concentration(0μg/ml,0.01μg/ml,0.1μg/ml,1μg/ml,10μg/ml) for 60min or by 1μg/ml LPS for different time stage (0min,5min,15min,30min,60min,120min) to observe the dynamic change of NF-кB intranuclear level and NO production, from which the best concentration and time point of LPS stimulation were selected. In the study, all AMs were divided into 4 groups: control group, group stimulated with LPS, group interrupted by Cal C and group inhibited by PDTC. The following parameters were measured: NF-кB level in nuclear protein extraction of AMs detected with sandwich ELISA, Inter-nuclear transposition of NF-кB observed with immunocytochemistry staining, NO content in cell culture medium quantitied with nitric acid reductase assay, Morphologic change of AMs in apoptosis observed with acridine orange staining and fragmentation at genome DNA of AMs detected with apoptotic electrophoresis assay.

分离、纯化及培养大鼠肺巨噬细胞；以不同浓度的LPS(0μg/ml，0.01μg/ml，0.1μg/ml，1μg/ml，10μg/ml)和不同作用时间(0min，5min，15min，30min，60min，120min)分别刺激小室培养的细胞单层，观察NF-κB的核内浓度及NO合成量的动态变化，选择LPS的最佳用量和作用时间；然后分成四组实验，设正常对照组，LPS处理组，特异性PKC抑制剂阻断组，NF-κB抑制剂阻断组；收集培养的单层细胞及培养液；采用夹心ELISA法定量测定细胞核提取物中的NF-κB水平；免疫组化法检测NF-κB的核内移位变化；硝酸还原酶法测定细胞培养液中NO含量；吖啶橙染色观察凋亡细胞的形态学变化，凋亡电泳实验检测细胞凋亡后基因组DNA的断裂情况。

During the process of nuclear reprogramming, the zygotes of the normal embryos and the donor nuclei of thecloned embryos cease their unique repertoire of gene expression and reset their gene expression to the totipo-tent status, and then the normal and cloned embryos redifferentiate from the totipotent status to variousdifferentiated states for tissue generation or organogenesis.

通过细胞核重编程，首先，受精卵和克隆胚胎的供体核停止其特有的基因表达程序，恢复为全能状态的基因表达程序；然后，受精胚胎和克隆胚胎的细胞再从全能状态重新进入分化状态，最终形成各种组织和器官。

On the 12〓 day, classical DNA ladder appeared after electrophoresis. Fine structural observation showed that the senescence process in this system is a highly ordered programmed cell death process, and its function was speculated as nutrition remobilization. All these suggested that this system is a plant cell apoptotic system.

从第8天开始有些细胞核开始出现TUNEL阳性反应，在处理12天时，总DNA电泳中出现了典型的DNA ladder，超微结构观察发现其衰老过程是一个高度有序的程序化死亡过程，推测功能上是一个营养物质再利用的过程，因而这一体系是一个细胞凋亡体系。

Results The eroded surface,active resorptive surface,nuclear number of osteoclasts in calcitonin group were less than in control group.

结果 骨吸收陷窝表面、活性吸收表面、破骨细胞平均细胞核数，降钙素组明显小于对照组。

In the treatment group, the bone cells were normal, the endoplasmic reticula were abundant and the cellular nuclei were of normal shape.

治疗组细胞正常，内质网丰富，细胞核呈正常形态；激素组骨细胞体积缩小，核固缩，染色质边聚，骨陷窝扩大。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。