细胞发生

Since 1997, the goose flocks in some regions of South and East China have experienced severe outbreaks of Newcastle disease virus infection. The results of the in vitro tests indicate that the goose isolates have stronger ability to induce syncytium formation, when compared to chicken and pigeon isolates.

1997年以来我国华南和华东部分地区发生了由新城疫病毒(Newcastle disease virus， NDV)导致的鹅的临诊疾病，而且发现鹅源NDV在体外具有比鸡源和鸽源毒株更强的致细胞融合的能力，这表明NDV的抗原可能发生了变异。

The results showed that the cell wall organization during anther development failed to divide into inner-wall, middle and tapetum normally, and not to provide material, energy and information transfer for the development of pollen mother cells, resulting in the occurrence of abnormal pollen mother cells separatist period; thus which could not form a normal pollen grains which led to abortion.

结果表明，不育花药壁组织在发育过程中，没有分化形成正常的内壁、中层及绒毡层，不能为花粉母细胞的发育提供物质、能量和信息的传递，造成花粉母细胞在减数分裂期发生异常，不能形成正常的四分体，因而未能形成正常的花粉粒而导致败育。

"That suggests that the virus may develop a mutation that causes it to integrate into host-cell DNA, and, therefore, may play a role in causing the cancer," Toland says.

Toland说，这表明病毒可能发生了突变，使其可以整合入宿主细胞DNA，因此，在肿瘤发生中发挥重要作用。

On the basis of study on the conditions and pathways of expression of cell totipotency , totipotent cells were inquired to found the clone of marine macroalga.

依据藻体类型和早期形态发生类型，选择假膜体、膜状体和多核单细胞体三种类型的海藻，在单藻培养、不加激素的条件下进行外植体培养，研究海藻细胞全能性表达的条件和途径，并在此基础上，寻找全能性细胞，构建大型海藻无性系。

There is rare information of Trichinosis and apoptosis internal and external. In order to study the relationship between apoptosis and infection of T.

目前研究发现，某些寄生虫感染诱导的细胞凋亡在疾病的发生机制中起重要作用，细胞凋亡在寄生虫发育过程中是必须的，它与寄生虫的生长、发育、感染和转归等密切相关。

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。

A proportion of the triadiate cells could shorten one arm and gradually pass, during successive divisions into the fusiform cells, however there was little to suggest that fusiform cells ever became triradiate by growing out a third arm.

培养液比重、温度及光照条件的改变短期内对细胞形态类型的转变没有明显影响；淡水和低温(4℃～8℃)的长期胁迫能使梭形和三出放射形藻株发生高比例的卵形细胞。

Based on the above-mentioned, two kinds of target glycoclusters with different glycoterminus, flexible linkers and different scaffolds were designed, disaccharide glycocluster (including TM1-TM7) and trisaccharide glycocluster (TM8-TM9) respectively, with the purpose of obtaining glycoclusters with high binding affinity to anti-Gal antibody and thus better inhibiting the HAR.

基于上述，针对HAR产生的机制，以人体中天然存在的anti-α-Gal抗体及B细胞表面的相应受体为靶点，以α-Gal抗原末端的二糖Galα1→3Gal和三糖Galα1→3Galβ1-4GluNAc片段为糖基部分，采用柔性的连接臂（氨基保护的2-乙醇胺和3-巯基丙酸）和刚性的芳香骨架及柔性的脂肪链骨架，设计了两类结构新颖的糖簇分子：即氧苷和硫苷键连接的二糖糖簇TM1-TM7）和三糖糖簇（TM8-TM9），目的在于寻找与anti-Gal抗体及B细胞相应受体有较高结合力的糖簇分子，以便有效地抑制HAR反应的发生。

Derivation of a species or type from more than one ancestor or germ cell .

多源发生说；多细胞繁殖从一个以上的祖先或初始细胞衍生成为一个物种或一种类型

A specimen of an organism taken from the type locality of that species .

多源发生说；多细胞繁殖从一个以上的祖先或初始细胞衍生成为一个物种或一种类型

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。