细胞囊

Observing the mature embryo sac of the mutant: It was found thatthe embyo sac appeared in typical polygonum type and more than 90% of the embryo sac hadintegral inner structure. They had egg apparatus, two polar nucleus and three antipodal cells , and their position in the embryonic sac was normal .

幼穗分化、成熟胚囊观察发现，90％以上的胚囊具有完整的内部结构，有卵器、两个极核及多个反足细胞，且位置正常，胚囊呈现典型的蓼型结构；同时还观察到雌、雄器官的发育是同步的。

OBJECTIVE: Three sesquiterpene lactones 1-O-acetylbritannilactone, isoalantolactone and britannilactone were isolated from the roots of Inula helenium and the flowers of Inula japonica. The antitumor activities of the three sesquiterpenoids in the cell lines of HeLa, HEC-1, SHIN3, HOC-21 and HAC-2 were measured, and the relationship between structure and activity and the possible mechanisms were explored.

目的： 观察菊科植物中分离出的3种倍半萜化合物异土木香内酯、1-氧-乙酰大花旋覆花内酯和大花旋覆花内酯对体外培养的人子宫颈癌HeLa细胞、人子宫内膜癌HEC-1细胞、人卵巢透明细胞癌SHIN3及HOC-21细胞和人卵巢囊腺癌HAC-2细胞增殖的影响，研究这3种倍半萜化合物的体外抑制肿瘤细胞增殖作用及其结构与活性之间的构效关系，进而探讨3种倍半萜化合物的体外抑制肿瘤细胞增殖的可能机制。

It is suggested that cyst germination inoculates sufficient vegetative cells into the water column and high cell densities contribute to the formation of cyst, which led to the next onset of algal bloom.

由此可见，大亚湾沉积物中该藻孢囊的萌发给水体提供了丰富的营养细胞，反之水体中高密度营养细胞又促使孢囊的大量形成，从而造成了锥状斯氏藻赤潮在大亚湾海域接连发生。

It is suggested that cyst germination inoculates sufficient vegetative cells into the water column and high cell densities contribute to the formation of cyst, which led to the next onset of algal bloom.

由此可见，大亚湾沉积物中该藻孢囊的萌发给水体提供了丰富的营养细胞，反之水体中高密度营养细胞又促使孢囊的大量形成，从而造成了锥状斯氏藻赤潮在大亚湾接连发生。

Results: CAP did not affect cell proliferation of HDFC, but increased the ALP activity of HDFC at high protein concentration.

结果：牙骨质附着蛋白对牙囊细胞的增殖无显著影响，但高浓度的牙骨质附着蛋白可增强牙囊细胞碱性磷酸酶活性。

The average cell number of each embryo were significant differences between 12-24 hr and 36-48 hr treatment and 0-72 hr treatment of early blastula; the cleavage index of each embryo were significant differences between 0-12hr and 24-36 hr treatment and 0-72 hr treatment of the hatching of blastula; embryo cell number and cleavage of other treatments were no differences.

早期囊胚的12-24h处理组和36-48h处理组的每一胚胎平均细胞数与0-72h处理组有显著差异；扩张囊胚0-72h处理组的分裂指数与0-12h处理组和24-36h处理组有显著差异，其它各组的胚细胞数和分裂指数均无差异。

After applied in vivo,NX1resultsin cell apoptosis of cysticerci first and then necrosis appears under theinvolvement of some factors from hosts.

6说明NX1体内作用后，首先引起猪囊尾蚴细胞发生凋亡，而后在宿主因素参与下导致猪囊尾蚴细胞发生坏死。

Megaspore mother cells undergo meiosis, which results in the formation of 4 megaspores in a row. The chalazal-most cell develops into an 8-nuclei embryo sac after 3 rounds of mitosis. A mature embryo sac is produced after cellularization and nuclear migration.

结果表明：1大孢子母细胞经过减数分裂形成直线排列的4个大孢子，其中珠孔端的3个大孢子退化，合点端的大孢子进行3次有丝分裂，形成八核胚囊， 8个核迅速细胞化，最终发育为成熟胚囊。

Through differential centrifugation and sucrose density gradient centrifugation,tono plast vesicles were isolated from suspension-cultured Populus euphratica cells broken by mortar and pestIe,blender or ultrasonic homogenizer.The sensitivities of H+-ATPase to NO-3,VO3-4 andNaN3,as well proton pnmping activities of membrane-bound pyrophosphatases demonstrated that tonoplast vesicles mainly distributed on the interface of 0％～25％of sucrose.

为进一步研究液泡膜及H+-ATP酶在胡杨抵御盐胁迫中所起的作用，比较了研磨、捣碎和超声破碎三种细胞破碎方法，从悬浮培养的胡杨细胞中制备液泡膜微囊的效果；并用差速离心和不连续蔗糖密度梯度离心纯化了胡杨液泡膜微囊。

Experiments were also performed to study the IIF behavior of microcapsules of various sizes by the cryomicroscope. It was observed that the microcapsules behaved as osmometers that water migrated across the cell wall when there was an osmotic potential. During freezing, IIF phenomenon of microcapsules occurred immediately after the ice front touched the microcapsule following the seeding of the supercooled solution.

在本研究中亦以褐藻酸钠为材料制作不同大小微胶囊以模拟人工细胞，并以低温显微镜系统进行其低温冷冻实验，实验结果显示微胶囊会因为内外渗透压不同而发生水分迁移现象，且当触发囊壁外过冷水溶液时，囊壁外冰晶形成会随即造成微胶囊发生细胞内冻结现象。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。