查询词典 death cell

In the study, a set of near isogenic lines of CMS-S, S-Mo17Rf3Rf3 and S-Mo17rf3rf3, were adopted, and TdT-mediated dUTP nick-end labeling, in situ immunolocalization of cytochrome c and DNA ladder assay were employed to study the programmed cell death process on cytology and DNA level. The microscope observation evidenced that tapetal cells of fertile anthers kept intact until microspores, and then were disintegrated on later developmental stage.

S型细胞质雄性不育系的一对近等基因系S-Mo17Rf3Rf3 和S-Mo17rf3rf3为材料，采用TdT介导的dUTP DNA末端标记、细胞色素C免疫原位杂交和DNA寡聚核小体片段电泳等方法，分别在细胞学水平和DNA水平上研究了玉米CMS-S小孢子败育的细胞程序性死亡过程。

They demonstrated that thymoquinone triggered programmed cell death in the cells, and that a number of important genes, including p53, Bax, bcl-2 and p21, were affected.

他们证明了百里香醌能够触发程序性细胞死亡，并且影响了一些包括p53， Bax， bcl-2 和 p21等很重要的在内的基因。

Reactive oxygen species causing DNA oxidative damage comes from two kinds of ways:one is from cellular normal physiological metabolism;the other is from outer environment.Redox-sensitive green fluorescent protein was expressed in Saccharomyces cerevisiae.Recombinant cells were evaluated in monitoring the changes in the redox state of living cells when challenged with toxicologically relevant metal ions NaAsO_2 or Pb(NO_3)_2 by measuring emission intensity at 510 nm with a Hitachi F6500 fluorescence spectrophotometer,roGFP expressed in yeast responded not only to typical membrane-permeant oxidants H_2O_2 and reductants DTT,but also to toxicological metal ion-induced intracellular redox changes in a dose-dependent manner.Moreover,exposure of yeast cells to NaAsO_2 or Pb(NO_3)_2 at concentrations that induced redox changes reported by roGFP caused up to 2～3 fold increases in DNA mutation frequency.This mutagenic effect was largely caused by oxidative stress since blocking the production of hydryl radicals with thiourea significantly reduced the mutation rate as well as delayed the cell death.

本文将对氧化还原状态变化敏感的绿色荧光蛋白roGFP1-R12，在酵母细胞中实现了多拷贝强表达；荧光扫描经强氧化剂H_2O_2和还原剂DTT以及环境中重金属NaAsO_2或Pb(NO_3)_2处理后的酵母细胞悬液，测定510 nm处的荧光发射强度结果显示，表达的绿色荧光蛋白对氧化还原水平敏感，且在510 nm处的荧光强度与一定的重金属浓度呈正相关，即roGFP1-R12在510nm处的荧光发射值随重金属浓度的增高而增强，从而说明重金属对细胞的毒性在一定程度上很可能是通过破坏细胞内的氧化还原平衡发生作用；同时通过该绿色荧光蛋白对胞内氧化还原状态变化的响应情况可以来实时检测环境中的重金属；遗传学的点突变频率及致死率实验数据表明，重金属能导致菌体的点突变频率和致死率升高，且活性氧的清除剂巯基脲能明显降低这种点突变和致死率，说明由重金属引发的这种点突变和致死效应在很大程度上是依赖于重金属对细胞诱导产生的氧化胁迫。

The transgenic tobacco plants expressing CED-9 showed strong resistance to aluminum toxity and salt stress compared with wild plants. It was suggested that CED-9 conferred enhanced resistance to cell death induced by abiotic treatment and affected plant growth and development.

通过与野生型烟草对照，研究了CED-9基因在烟草的抗逆境中的功能，结果显示CED-9基因能提高烟草对金属Al和盐的抗性，并对烟草的生长发育产生一定的影响。

Blue dyed trypan analyses indicated that the lesion mimic trait of the mutant was caused by the programmer cell death.

锥虫蓝染色检测结果表明spl类病斑的形成和发展是一个程序性细胞死亡的过程。

The underlain mechanism of cell death of SK-N-SH cells may be at least partly different from that of the apoptosis of D8 cells, which may contribute to further etiologic study and even cure of Parkinson's disease.

所有这些工作将有助于进一步研究Parkinson's病的病因机制及给该病的治疗带来希望。

However, it is not possible to determine whether the increase in autophagic vacuolization is an adaptive response or a harbinger of cell death.

然而，不可能确定自噬空泡的增加是否是一种适应性反应或细胞死亡的预兆。

Bcl2 heterodimerizes in vivo with a conserved homolog, Bax, that accelerates programmed cell death.

Bcl2、Bax基因与程序化细胞死亡在颞下颌关节发育中的作用。

After SE, DNA ladder was seen in nucleus amygdalae where neurons were morphologically necrotic, which suggests that programmed cell death mechanisms may be activated in this SE model.

结论癫痫持续状态后，形态学上表现坏死的神经元出现梯状DNA电泳带，提示在此模型中可能存在程序性细胞死亡的机制。

After SE, DNA ladder was seen in nucleus amygdalae where neurons were morphologically necrotic, which suggests that programmed cell death mechanisms may be activated in this SE model.

结论癫痫持续状态后，形态学上表现为坏死的神经元出现梯状DNA电泳带，提示在此模型中可能存在程序性细胞死亡的机制。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。