细胞发生的

It is concluded that the initial ancotomic site of blood island genesis may be is mesoblast of extraembryonic blastoderm rather than the yolk sac; the blood vessel endothelium cells and the blood cells are generated parallel; the PGCs are the common ancestry of angioblast and HSC.

血岛最早发生的解剖位置可能不是卵黄囊而是胚外胚盘中胚层，血管内皮细胞与血细胞平行发生，PGC是成血管－造血干细胞的共同祖先。

RESULTS We successfully obtained human caspase-3 gene, the genes and expression vectors of reversed caspase-3 and its fusion protein with part of the translocation domain of Pseudomonas exotoxin A. Compared with the control group, the expression of both genes caused in a similar degree the decrease of living cell numbers and massive occurrence of apoptosis.

结果成功获得了caspase-3基因，构建了重构型caspase-3基因和重构型caspase-3与绿脓杆菌外毒素转膜结构域部分肽段的融合蛋白基因及其表达载体，与对照组相比，在转染后1～4 d内，两种基因的表达均导致HeLa细胞存活数减少，大量细胞发生凋亡，且二者活性相当。

Their gray scale values were 218±4,215±4 and 228±6 respectively. The expression in...

VEGF及其受体在肝癌细胞中的表达与肝细胞癌的发生发展有关

Six2-expressing cells give rise to all cell types of the main body of the nephron during all stages of nephrogenesis.

在肾脏发生的所有时期，Six2表达细胞都可分化为组成肾单位主体的所有细胞类型。

Down-regulation of bcl-2 expression appears to play an important role in apoptosis of the differentiated leukemia cells induced by realgar.

雄黄通过影响白血病细胞bcl-2蛋白的表达，从而导致白血病细胞发生凋亡，这是其治疗白血病的重要分子机制。

The transitional cell carcinoma of the bladder is liable to plant and recrudescence.

本研究选取COX-2、原癌基因HER-2、抑癌基因p53进行探讨，目的在于了解COX-2，HER-2，p53在膀胱移行细胞癌发生发展中其蛋白产物表达情况以及它们可能存在的相关性，以期对膀胱移行细胞癌的诊断、预后、监测、治疗提供一定理论指导作用。

By using tricks from optics and physiology, they were able to watch the steps of viral assembly, budding, and even scission off the cell surface.

研究人员在蛋白分子上涂上荧光，放置在细胞内紧贴细胞内壁的位置，当分子聚集在一起时，荧光的色彩会发生变化。

The medium-Nitsch basic medium with 1umol/L 2, 4-D was suitable for the growth of somatic cells. The trimness degree of somatic embryogenesis was more improved after the treatments of cells to be sifted with 1mm diameter screen in 4 days of subculture.

胚性细胞团悬浮培养最适培养基为ND培养基，在继代后4天将细胞团经孔径1mm的钢质筛网多次过滤处理，可以使体细胞胚胎发生的整齐度大大增强。

BACKGROUND: The structural and functional impairment of endothelium cells were mainly presented by lowered endothelium activity, reduced nitrogen monoxide production, as well as increased endothelium vasoconstrictor peptide.

背景：内皮细胞发生结构损伤和功能障碍的主要特征为内皮细胞活性降低或释放的一氧化氮减少，内皮缩血管肽产生增加。

The drug resistance of tumour is one of the major reasons of chemotherapeutic failure.

肿瘤细胞发生耐药是化疗失败的主要原因之一，而p73蛋白的某些亚型被证明与肿瘤细胞耐药密切相关。

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％。