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Results Infected by this peptide, cell viability decreased 28.9%. Under light microscope, cells were shrinked and rounded, many cells were divorced from plate wall, some neuraxon shortened and broke. Apoptotic cells which nucleolus shrinked and rounded could be coloured orange by fluorescent colouration. Under electron microscope, chromatin gathered along the inside of the nuclear membrane, vacuole bodies appeared. Apoptotic peak was detected by flow cytometry and the ladder band appeared in DNA electrophoresis.

结果:细胞接触肽段后存活率下降28.9%;光镜下可见细胞贴壁不良,胞体缩小,细胞突起断裂缩短;荧光染色可见细胞突起缩短、胞核固缩、胞质染成橘红色的凋亡细胞;电镜下可见胞质中出现空泡样结构,细胞染色质浓集于核膜内侧并裂解成碎块状;流式细胞仪检测细胞出现亚二倍体峰,DNA电泳出现梯状带。

Cells were collected to undergo HE staining and immunocytochemistry reaction against Thy-1 to identify RGCs. Axons length of retinal neurons and RGCs were measured by microruler under microscope respectively to evaluate the neurotropic effects of B vitamins in improving the regeneration and growth of axons for retinal neurons and RGCs. Finally, we observed the reaction of retinal neurons when exposed to the insult of glucose deprivation. The neuroprotection of B vitamins were also evaluated at the same time.

对B族维生素的神经营养和保护作用的研究过程分为三个阶段,首先确定维生素B族对视网膜神经元是否有神经营养作用,并根据细胞活力找出最佳有效作用浓度;然后在接种细胞的即刻用各种维生素的最佳有效作用浓度作用于视网膜神经元,并在不同时间终止培养,收集细胞,HE染色和RGCs的免疫细胞化学染色,分别测量视网膜神经元和RGCs的轴突长度,评价维生素B族是否有促进视网膜神经元和RGCs轴突再生伸长的神经营养作用;最后,观察视网膜神经元对低糖损伤的反应,及维生素B族对受损的细胞是否有保护作用。

Nonfermentative bacilli growing on solid medium and enterobacteria growing in flagella broth were more suitable for flagella-staining.

非发酵菌适合于固体培养进行鞭毛染色获得最佳效果,液体培养对于一些肠杆菌鞭毛染色更为适合。

Light microscope and transmission electron microscopy showed that SMMC-7721 cells induced by SAHA had undergone the restorational alteration in morphology and ultrastructure, which were different from those of nontreated cells but were similar to those of normal cells, and the changes were as follows: the cells turned to be flat and spread; the nucleo-cytoplasmic ratio lessened and nuclear shape became rather regular; the number of nucleolus reduced and its volume lessened; euchromatin increased while heterochromatin decreased in nucleus; in the cytoplasm, mitochondria grew in number with relatively consistent structure and well-developed mitochondria cristae; Golgi complex turned to be well-developed and typical; rough endoplasmic reticulum increased. Immunocytochemistry assay showed that the expression of AFP and PCNA were declined significantly. FCM analysis showed SAHA could arrest SMMC-7721 cells in G0/G1 phase, with an accumulation of the cells in G0/G1 phase while a decrease of cells in S phase. Semi-quantitative RT-PCR detection revealed that the expression of p21WAFl mRNA was upregulated remarkably in the cells treated with SAHA.

结果:倒置显微镜和透射电镜观察显示,经SAHA处理的细胞增殖速度显著减慢,细胞体积增大,细胞核较小,形状较为规则,核仁数量减少、体积变小,核内常染色质增多而异染色质减少,核质比例减小,细胞质内线粒体数量增多、线粒体嵴发达,高尔基体较为典型,粗糙型内质网增多,呈现出与正常上皮细胞相似的形态变化;MTT比色法测定结果显示不同浓度(2.5、5.0、7.5、10.0uM)SAHA对SMMC-7721细胞的增殖均有抑制作用,并有明显的剂量依赖和时间依赖关系;免疫细胞化学检测显示SAHA能显著降低PCNA和AFP在SMMC-7721细胞中的表达;流式细胞仪检测结果显示,SMMC-7721细胞经SAHA处理后,G0/G1期细胞明显增加,S期细胞则明显减少,细胞被阻滞于G0/G1期;RT-PCR检测结果表明,SAHA作用12h后SMMC-7721细胞中p21WAF1 mRNA的表达即有增加,24h后更为明显。

ICH was induced by the injection of 50 ul autologous blood into the right caudate nucleus, while 50 μl natural saline was injected in the control group. The rats were killed after 6h, 24h, 2d, 3d, 5d and 7d respectively, the morphology changes of nerve cell oncosis and count by electron microscope and the immunohistochemical method and computer image analysis were performed in rats brain by using antibody of VEGF.

采用二步法制备大鼠脑出血模型,脑出血组注入自体血50μl,对照组注入等量生理盐水,分别于6、24h、2、3、5、7d后处死,行HE染色和免疫组化染色观察脑内VEGF表达变化;电镜下观察胀亡细胞形态学变化并计数。

Methods Male Sprague Dawley rats were induced by ligating the anterior descending coronary artery and were divided into the 2nd, 4th, 8th, 12th and 21st week groups. Elastic fibers were evaluated in the infarct region using Masson trichrome staining, Uana orcein staining and image analysis. The expressions of TNFα and IL-1β were also detected by immunohistochemistry.

SD大鼠冠状动脉前降支结扎形成心肌梗死模型,于术后2、4、8、12、21周时,用Masson染色、Uana地衣红染色技术和免疫组织化学方法,分别观察梗死区弹性纤维和白细胞介素1β(IL-1β)、肿瘤坏死因子的变化,计算机图像分析系统作半定量分析。

Furthermore, heterochromatinization should be an earlier event than pericentric inversion.

另外,从刺鳅的X、Y上结构异染色质的相似分布来看,在性染色体进化过程中,异染色质化发生的时间应该早于臂间倒位。

A lot of organelles such as mitochondria, rough endoplasmic reticula and Golgi bodies were observed in fiber cell. Then, double karyotheca disappeared, and the organelles disintegrated. Multivesicular bodies appeared in fiber cytoplasm. With the further development of fiber, fiber wall underwent continual thickening with aging, and polylaminate structure gradually appeared. While the agglutinated nucleus, transfer vesicles, plasma membrane and plasmodesmata still presented.

研究发现,次生壁形成早期,细胞核具有双层核膜,染色质凝聚,可见大量的线粒体、粗面内质网和高尔基体等细胞器存在于纤维细胞中;随后,双层核膜消失,细胞器将逐渐解体,多泡体开始出现在纤维细胞的细胞质;随着年龄的增加,纤维细胞壁逐渐增厚,并出现多层结构现象,而运输小泡、细胞膜、胞间连丝和凝聚的染色质将持续存在。

Methods We reported a case of PXA located in the cerebellum of a young adult in view of its extremely unusual location. Morphologic observation, immunohistochemical staining using DAKO EnVision system , histochemical stains including hematoxylin eosin and Gordon Sweet's reticulin methods were used.

采用免疫组织化学DAKOEnVison法、组织化学网质纤维染色和HE染色及形态学观察的方法,报道 1例极罕见于年轻人小脑的多形性黄色星形细胞瘤,探讨其临床病理特点。

Objetive:To investigate the histopathological features and detect the mutation of JAK2V617F in PV、ET and IMF;to analyze the effects of the stages of myelofibrosis and the mutation on the number of leucocyte in PV and ET patients;Methods: the morphological features of 69 patients who dignosed in the first time were studied by HGF and Gomori stains ; the mutation of JAK2V617F was detected in 38 blood or marrow samples of PV、ET and IMF patients by real-time PCR;the effects of the stages of myelofibrosis and the mutation on leucocytes were analyzed;Results: Different stages of reticulin were observed in 15 PV and 15 ET patiens'marrow sections,and the cytosis、the pleomorphism and the bone trabecula side location of megakaryocytes were observed in all PV、ET and IMF patients;the means of leucocyte in patients with and without JAK2V617F were 20.4×109/Land 11.4×109/L respectively;the P value was 0.367 as comparing the leucocytes among different stages of reticulin increasing.

目的:探讨PV、ET、IMF患者的骨髓病理特点并且检测JAK2V617F突变的发生率,分析骨髓中纤维增生程度以及JAK2V617F对PV、ET患者白细胞数的影响;方法:69例初诊患者的骨髓切片经HGF染色以及Gomori染色后进行形态学研究;并利用real-time PCR法测38例患者的骨髓或者外周血的JAK2V617F突变;分析骨髓切片中纤维组织增生程度以及JAK2突变对患者白细胞数的影响;结果:15例PV和15例ET患者的骨髓切片中可以观察到不同程度的纤维组织增生,所有PV、ET、IMF患者骨髓病理中可见到巨核细胞增多、巨核细胞多形性改变以及巨核细胞定位于骨小梁旁;12例PV、4例ET、4例IMF中检测到JAK2V617F;有突变和无突变患者发病时白细胞数均值分别为20.4×109/L和11.4×109/L,比较不同纤维增生程度的PV、ET患者的白细胞数均值,P值为0.367。

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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。

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