细胞发生的

It may be one reason for immune escape of tumor cells that induces the development and metastasis of tumor.

这可能是肿瘤细胞发生免疫逃逸，从而导致肿瘤的发生或者转移的原因之一。

The typical structural characteristics of oil cells include, presence of a tripartite cell wall, in which the outer and inner layers are cellulose, the middle layer is a suberin layer lamellated; presence of a cupule attaching the oil vacuole to the wall; presence of plasmodesmata occurring in wall protuberances, which is coursed by the suberin layer.

成熟油细胞结构的典型特征是：具有三层暗明暗相间的细胞壁，内外两层是纤维素壁层，电子不透明，中间一层是电子透明的木栓质化壁层，由明暗相间的片层结构组成；细胞腔被油囊充满，它由一个细胞壁向内突起的杯形构造连接于细胞壁上：胞间连丝发生于由木栓质化壁层形成的一个向内的突起中。

BACKGROUND: The essence of cell differentiation is a selectively intra-cellular gene expression, which results in specific proteinic synthesis and causes changes in biochemistry, structure and function. Thus, original proteomics and a single protein analysis can not meet the requirement in study.

摘要背景：细胞分化的实质是细胞内基因的选择性表达，导致细胞新的特异性的蛋白质的合成，从而在生化、结构及功能上发生变化，原有的基因组和分析单一蛋白的模式已不能满足研究的需要。

The reacting tite with NDPK-A was 1:800 and theantisera was specific.Conclusions: The purified rhNDPK-A protein exists mainly in the form of hexamer;rhNDPK-A protein can promote the survival of spleen cell and may take part in theadjustment of cell growth by the way of changing cell cycle.

ELISA法检测所制备的抗体的反应效价为：1：800，western blotting试验结果证实，该抗血清具备较好的特异性，能与rhNDPK-A蛋白发生反应，结论：rhNDPK-A蛋白可能主要以六聚体形式存在，直接观察的蛋白结构与文献报道的X衍射结果相似；rhNDPK-A蛋白对正常小鼠的脾细胞的存活有促进作用，推测很可能以信号转导的方式调控细胞周期从而达到对细胞生长的调节作用。

Using this model three competence-deficient pneumococci, which was identified by PCR and transformation experiment, were constructed. It is found different strain has different bacterial optimal density for being induced into competence. The optimal density for strains 1, 2 and 22 was 0.1, 0.08and 0.07 respectively. The optimal condition for transformation is c plus y culture at pH8.0. In c plus y culture at pH6.8, which restrained pneumococci forming transformation naturally, pneumococci could be induced to form transformation by CSP.It is concluded that we could induce different S.pneumoniae by CSP into competence in their optimal density in laboratory. 2. It was discussed the relationship between pneumococcal transformation formation and its opportunistic pathogenesis. Comparing their virulence with that of parental strains by challenging mice intraperitoneally and adhering to ECV-304 cell respectively.

结果表明不同肺炎链球菌株的转化最适菌密度不同，1、2和22号菌株的最适转化密度分别为0.1、0.08和0.07；用于转化的CTM培养基最适为pH 8.0的C+Y培养基；在自然转化下不能诱导转化发生的pH 6.8的C+Y培养基中，使用CSP诱导，也能促使细菌发生转化，只是转化效率较低；结论：实验室条件下，不同细菌在一定菌密度时可利用CSP诱导肺炎链球菌成为感受态发生转化。2、为探讨肺炎链球菌转化对毒力表达的影响，本研究分别通过体外粘附人脐静脉血管内皮细胞ECV-304和体内小鼠毒力实验观察1、2和22号肺炎链球菌和其转化缺陷菌株1t、2t和22t毒力的差异。

CAM-1–targeted but not control microbubbles attached to cultured endothelial cells, although firm attachment at the highest shear rates (8 to 12 dynes/cm2) occurred only in pulsatile flow conditions.

尽管与仅在血液流动状态下发生的以最高剪切压率(8 to 12 达因/cm2)紧密联系，但靶向血管细胞粘附分子-1 (CAM-1)并没有控制与培养内皮细胞相关微泡斑块。

Accompanying salinity variation, the density of cells and the structure of particle cells in the head kidney underwent some marked changes. However, the structure of lymphocytes and monocytes showed no visible changes.

水体盐度变化使实验鱼头肾中细胞排列的紧密程度、粒细胞结构发生了明显变化，而淋巴细胞、单核细胞未观察到明显变化。

DNA ploidy can more really reflect the content of DNA,which has long history in the relation study with tumor.

肿瘤细胞的重要生物特性是无限制增值，这个过程需要合成大量的核酸来完成，也使得细胞内的DNA含量发生变化，肿瘤细胞的DNA含量异常，是恶性肿瘤的重要标志。

Meanwhile,HDAC1 acetylation level is significantly increased.The overexpression of HDAC1 can promote erythroid cell proliferation and inhibits induced differentiation,the knockdown of HDAC1 or 2 inhibits erythroid cell proliferation and promotes induced differentiation.We also found that HDAC1 affects GATA1 mediated transcription activity.Thus our data revealed that HDAC1 may negatively regulate GATA1 mediated transcription and suggest that the dynamic regulation of GATA1 associated NuRD/MeCP1/HDAC1/HDAC2 complex may determine the onset of erythroid differentiation programs.Moreover,this study will eventually help to design new therapeutic approaches in treatment of leukemia.

研究发现在被诱导分化的小鼠红细胞白血病细胞中与GATA1相结合的HDAC1被乙酰化并失去活性，在血细胞中过表达HDAC1能够促进血细胞的增殖并抑制分化，反之在血细胞中敲除HDAC1或HDAC2能抑制血红细胞的增殖并促进分化，而且HDAC1能够负调控GATA1的转录活性，GATA1与NuRD/MeCP1复合体之间的动态调控，决定血红细胞分化的发生和发展，并为探索白血病的致病机理奠定了理论基础。

Extraction in crustaceans, salmon, shrimp, phosphorus, red algae astaxanthin, and removal of reactive oxygen species inhibit the capacity of the antioxidant power is 10 times more carotene, Q10 150 times, 550 times the vitamin can promote cell regeneration, slow down premature skin aging occur, and add the green tea extract can prevent the skin caused by ultraviolet radiation caused by aging, protecting cells to reduce the damage of UV on cell DNA, is effective against free radicals and prevent skin aging.

效用：萃取於甲壳类、鲑鱼、燐虾、红藻的虾红素，具有抑制及清除活性氧的能力，其抗氧化力是胡萝卜素的10倍、Q10的150倍，维他命的550倍，能促进细胞再生，延缓肌肤老化过早发生，并添加绿茶萃取能防止因紫外线造成所造成的皮肤老化，保护细胞减少紫外线对细胞DNA的伤害，有效对抗自由基，防止肌肤老化。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。