细胞发生

Within the bursa they undergo rapid rounds of cell division and only within this unique environment does gene conversion occur.

在法氏囊内，这些细胞迅速进行细胞分裂，并且这有在这个独特的环境中才能发生基因转换。

Objective To investigate action of apoptosis in gastric carcinogenesis by study the relationship between apoptosis and proliferation in gastric cancer.

目的 通过不同分化程度的胃癌与细胞凋亡及增殖的关系，探讨细胞凋亡在胃癌发生中的作用。

BMP-7 was a powerful bone-inducing factor,not only can induce osteoblastic differentiation markers,but also stimulate cartilage cell marker expression.

骨形态发生蛋白7是强力骨诱导因子，不仅可以诱导成骨细胞分化标志物，还可刺激软骨细胞标志物的表达。

If the activation occurs in cell division, the cell death.

如果该激活发生在细胞分裂时，细胞死亡。

Results: Obvious pathologic changes were observed in pancreas and the apoptotic rate of pancreatic cell in SAP groups were much higher than that in the control group(P.01). The mortality rate was 12.5% in 24h, 90% in a week.

结果：SAP组大鼠胰腺发生明显病理损害，SAP时各时点胰腺细胞存在胰腺细胞凋亡，SAP大鼠1周死亡率为90%。

After years studying the microscropic structure of plants, he proposed his cell theory Contributions to Phytogenesis(1838), in which he stated that the various plant structures are all composed of individual cells.

经过多年对植物显微结构的研究，他在1838年发表了的《植物发生论》中提出了细胞学说，指出细胞是构成植物体各种结构的基本单位。

At the same time,there were not marked difference in the numbers of biastomere and mitotic index of control group and all treatment groups, suggesting that 2 -celt embryos were not only most sensitive to exogenous H2O2 but also rasiest to occur to development block.

但是经H2O2处理之后，度过2-细胞期发育阻滞的胚胎能在以后的发育中发生补偿性生长，其胚细胞数和分裂指数都和体外正常发育的胚胎没有差异。

(1) No blood vessels were found to differentiate and become the lymphatics in the mesentery of fistar rat, and this suggested that the lymphatic might develop from the mesenchymal cells in the tissue. Our results showed the mesenteric lymphatics developed """"""""centripetally"""""""".

结论(1)没有发现肠系膜血管分化形成淋巴管，淋巴管可能发生于血管以外的间充质细胞，即"向心"性发生。

The axonal guidance is one form of chemotaxis, which means that a cell or part of the cell, e.g.

从广义上讲，神经生长锥导向是一种细胞趋化运动，即细胞对外界特定化学导向因子的浓度梯度发生反应而进行定向的运动。

The pupae were exposed to 9 krad 60Co-γ rays for two days before emergence.The adults were dissected and many mature sperms could be seen in the male flies.There were no significant difference in the form,number and vigor of sperm between irradiatid and unirradiated male flies,but there were some abnormal ultrastructurail changes in the sperm of irradiated male flies such as the appearence of vacuoles in nutrient cells,disarrangement of sperms,variation of the number of chondriosome derivates,axonemes ction of formation and abnormal cell division of sperm cells.

用9krad辐照羽化前2天的蛹，成虫羽化后解剖观察，雄虫已有大量成熟精子，精子形态、数量和活力与未经辐照处理的雄虫无显著差异，但其超微结构则发生了某些异常变化，如营养细胞出现空泡、精子排列零乱、线粒体衍生体和轴丝增多或减少、构型被破坏、精子细胞分裂异常等。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。