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This hindrance is thought to be due to limited proliferative capacity of the endothelial layer.

产生这一障碍的原因是内皮细胞层的功能受到抑制或内皮细胞的增殖受到抑制而无法修复损伤。

The mechanism of its improvement of radiotherapeutic effect by low dose of MMC might be due to its enhancement of immune function and induction of adaptive response in tumor-bearing mice.

其机理可能与荷瘤机体免疫力的提高，并诱导机体产生的适应性反应有关。

It was evident that increase in CNTF-immunoreactivity 1 day after sciatic nerve crushing may be due to the broken Schwann cells, resulting a great amount of CNTF released and transported from proximal axon to neuronal soma retrogradely.

但亦不能排除运动神经元自身表达增加的可能。

Compared with flunarizine and nimodipine, in addition the Chinese herb tetramethylpyrazine has the beneficial effects on the antagonism of brain Post-ischemic hypertension or increase of PAP and PCWP, while tetrand- rine showed weak amelioration effects on brain resusci- tation, which may be due to its no selectivity on brain or brain vesseles.

与氟苯桂嗪和尼莫地平相比，中药川芎嗪还具有对抗脑缺血后继发性外周血压和肺血管压升高的独特效应。而汉防己甲素的抗脑缺血损害效应微弱，可能与此药对脑血管、脑细胞选择性作用较低有关。

While "surprising," Shai suggested that the lack of effect on HDL might be due to the relatively short duration of the trial.

虽然&令人惊讶&，Shai提出，缺乏对高密度脂蛋白的影响，可能是由于试验持续时间相对较短所致。

The great width of the fractured zone may be due to the tensional action.

破裂面较宽，可能与其张性特征有关。

The arise of Ang II was found in thecal cells specially, the reason could be due to an abundance of blood vessels in the thecal cell layer, but not in the granulosa layer. E2, P, T may play very important roles in the follicle development and atresia.

RAS的变化主要发生在卵泡膜细胞，可能与卵泡膜细胞层具有丰富的血管而颗粒细胞层中无血管有关。E2、P、T具有不同程度的促进卵泡发育和抑制闭锁的作用。

These results indicated that they may be due to the mechahism of DNBEP to trest ITP by means of selective suppressiong of humoral immune function, two-way regulation of the cell immune function and recovery of the platelet function.

提示养血清癜汤的疗效机制是通过对体液免疫的选择性抑制作用，对细胞免疫的双向调节作用和对血小板功能的恢复作用来实现的。

Some likely reasons for the greater proportion of tuskless Asian elephants compared the African elephants may be due to strong selection in the past by humans killing the tusked male elephants and a gene in Asian elephants which is not as recessive.

与非洲象相比，由于人类过去过分捕杀有长牙的公象。形成非逆向基因淘汰的现象，而造成亚洲雄象无牙的比例较大的原因。

The etiology and pathogenesis is not very clear,may be due to excessive mechanical load or unbalanced distribution of cartilage wear,and then chondrocyte metabolic changes.Cell release a variety of catabolic enzymes that lead to aggrecan degradation,collagen network useless and cartilage unhomogeneity.

整合素作为细胞表面受体使整合素在细胞跨膜信号传递中起一定的作用，并且参与细胞的多种生理功能，如细胞的生长、发育、分化、凋亡等，同时参与多种病理过程，如淋巴细胞向炎症部位的聚集及肿瘤细胞的浸润等[2]。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。