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Agglutinative reaction of ConA to cells treated with nickel refining dusts suggested an alteration of biological feature in the attacked cells.

镍冶炼烟尘处理的细胞与ConA发生凝集意味着该细胞的生物学特征发生了改变。

Calcium activated potassium ionic channel is abbreviated to be BK, which is situated at the bottom of hair cell cilium, and is the important ionic channel of the electronic activity of hair cell, take part in the high frequency hearing, the significant change was found in the deafness by using the patch clamp.

钙激活钾离子通道简称BK通道,存在于毛细胞纤毛的底部,是毛细胞电活动重要的离子通道,参与高频听力发生,以往膜片钳的方法证实BK通道在耳聋时电生理功能发生重要改变。

The brain capillary and star glue quality cell which enwrap around it under thenormal condition form the permeation extremely low blood-brain barrier, onlypermit some little molecule to pass; When cerebral isc.

正常状态下的脑毛细血管及包裹在其周围的星形胶质细胞构成了通透性极低的血脑屏障,只允许一些小分子物质通过;当缺血性中风发生时,微血管通透性发生显著改变,这种病理变化与脑内皮细胞损伤导致的功能变化有直接的关联。

Strong expression of nanos 1 mRNA was detected in spermatogonia and relatively weaker signal was found in primary spermatocytes but no nanos 1 mRNA expression was observed in spermatids. The results suggested that nanos 1 may play an important role in maintenance and functioning of the germline stem cell—oogonia and spermatogonia.

在斑马鱼精子发生中, nanos1 mRNA可在精原细胞和初级精母细胞中检测到。nanos1 mRNA的阳性信号在精原细胞中极为强烈,在初级精母细胞中较为微弱,而精子细胞中没有阳性信号。

The results were as follows: nanos 1 mRNA uniformly dispersed throughout the cytoplasm of oocytes at all stages. Strong expression of nanos1 mRNA was observed in oogonia and stageⅠ、Ⅱ oocytes, but the signal became weaker in later stage oocytes.

结果表明:在斑马鱼卵子发生中,nanos1 mRNA均匀分布于卵原细胞和各时期卵母细胞的胞质中;在卵原细胞和Ⅰ、Ⅱ期卵母细胞中,nanos1 mRNA的杂交信号十分强烈,而较晚期卵母细胞中信号明显减弱。

Cyclin-dependent kinases has effects on cell cycle by modulating function of eukaryon organism.The functions have been further studied in cell cycle and the process cell cycle,which will be beneficial to explain tumorigenesis pathomechanism and the new way of oncotherapy.

细胞周期素依赖性激酶是调节真核生物细胞周期的关键分子之一,深入研究细胞周期素依赖性激酶在细胞周期与细胞生长中的作用,对于阐述肿瘤发生、发展的病理机制以及肿瘤治疗的新途径具有重要的意义。

objective:to investigate the expression and significance of rb in the occurrence, development and regression of infantile hemangiomas.methods:the expression of rb was examined in the proliferative stage and catagen of human hemangiomas and normal skin tissues by using immunohistochemical technique.immunohistochemical technique for factorⅷ-related antigen was used to prove that the cells which expressed rb were endothelium.image analysis system was applied to measure the expression level of rb at different stages of hemangiomas and in normal skin tissues.results:the expression of rb was significantly lower in proliferating hemangiomas than that in involuting hemangomas(p.05).conclusion:rb might play an important role in the regression of human hemangioma endothelial cells and anti-angiogenesis.

目的:探讨rb蛋白在血管瘤发生、发展及退化过程中的表达状况及其意义。方法:采用免疫组织化学方法检测人皮肤血管瘤增生期、退化期及正常皮肤组织中rb的表达水平,并结合第ⅷ因子相关抗原的免疫组织化学染色证实表达rb的细胞是血管内皮细胞。利用计算机图像分析技术测量不同时期血管瘤组织和正常皮肤组织rb表达的积分光密度和面积。结果:增生期血管瘤内皮细胞rb表达水平低于退化期,差异有显著性(p.05),退化期血管瘤内皮细胞rb表达水平与正常皮肤组织相比,差异有显著性(p.05)。结论:rb通过抑制血管瘤内皮细胞增殖和血管生成而在血管瘤的退化过程中起重要作用。

By using electroporation transfects,the TGF〓expression vector were introduced into HL-60 cells.Thecells were allowed to grow for 1 day before beingsubjected to selection for the ability to grow in mediumcontaining 600ug/ml geneticin.Stable cell clones resistantto G418 sulfate were obtained after 2-3 WK growth withdrug-containing medium.Southern blot hybridization wascarried out.RNA slot have higher expression of TGF〓mRNA in HL-60 transfected.All results followed suggestedthat TGF〓 have suppressed the maliganant phenotype of HL-60 cells.

利用电击法将〓表达载体导入HL-60细胞中,经G418筛选培养20天后再行Southern杂交检测外源〓整合情况,利用RNA狭线杂交法证明了在转录水平上表达有所提高,进一步进行了流式细胞仪测定DNA含量,使细胞在〓期产生生长阻滞作用,细胞生长速度,在软琼脂中成集落数、在组织中的浸润性及在裸鼠中的成瘤性均发生变化,我们的实验结果表明TGF〓对HL-60细胞具有抑制恶性表型的作用。

The proliferative capacity of LEC from human had directly relevance to the age of donor(r=-0.996).Conclusions The formation of lens-like spherules is characteristics of LEC lines in the cultured cells.Under identical conditions,the proliferative rate of LEC from bovine and rabbit is fast than that of LEC from human,but dedifferentiation of LEC from bovine and rabbit is easier than that of LEC from human;LEC from the three species exhibit similar limited growth potential.The proliferative rate of LEC from human has a inversely proportion with age.

&晶状体小体&的形成可作为确定晶状体上皮细胞株的一项特征性依据,而体外培养的人、牛、兔晶状体上皮细胞具有相同的有限生长潜能,在相同的条件下,牛、兔晶状体上皮细胞的生长增殖速度比人晶状体上皮细胞快,但易于发生去分化;此外,人晶状体上皮细胞的生长增殖率与年龄密切相关,年龄越小,晶状体上皮细胞的生长增殖速度越快。

The results showed that after 2 h of culture in MEM the chromosomes of oocyte were seperated to form telophase I while a small spindle was observed around chromosomes of primary spermatocyte. However, two clear spindles were observed in the oocytes cultured in CB containing MEM. After further culture, the chromosomes of both primary spermatocyte and oocyte intermingled and formed one large spindle.

在无CB的培养液中培养的卵母细胞培养2小时后,卵母细胞已经进入第一次减数分裂的后期,染色体开始被拉向两极,而精母细胞的MI纺锤体才刚刚形成,虽然继续培养两者染色体可以合二为一并形成一个纺锤体,但是有些染色体发生滞后;当卵母细胞在含有CB的培养液中培养2小时后,在卵母细胞内形成两个相似大小的MI纺锤体,进一步培养形成一个大的纺锤体,染色体正常。

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