核体

The ultrastructural changes during the development of sieve element companion cell complex (SE/CC complex) in Populus deltoides were investigated using electronic microscopy. The result showed that SE and CC tome from the same secondary phloem mother cell. The development of sieve element went through three stages, i. e. immature, mature, and degenerate stage. In immature stages the sieve element presented radial expansion, cell wall thickening, and production of sieve plastid and P-protein. The cytoplasma selectivly autolysed in mature stage. At the same time, karyoplasm was dispersed, and nuclear envelope was not clear, or karyoplasm was disorgnized, and nuclear envelope was clear. The karyopalsm finally turned into P-protein. In degenerate stage, the cytoplasm completely disappeared, and the function was lost.

利用电镜技术研究美洲黑杨次生韧皮部筛管和伴胞发育过程中细胞超微结构的动态变化，观察到筛管和伴胞由同一个次生韧皮部衍生细胞分裂分化形成筛管约发育历经未成熟期、成熟期和衰退期的变化未成熟期筛管分子表现为细胞的径向扩展、壁的增厚、筛管质体和P-蛋白质的产生；成熟期筛管分子细胞组分发生选择性自溶，细胞核核质弥散状，核膜不清晰，或核膜清晰而核物质降解，最后细胞核完全解体转化为P-蛋白质类的物质；衰退期筛管分子细胞质完全解体消失，失去功能。

In the hypothalamus, ghrelin-containing cells were identified in the arcuate, periventricular, dorsomedial and ventromedial hypothalamic nuclei, and lateral hypothalamic area.

下丘脑内的阳性神经元胞体主要分布于弓状核、室旁核、腹内侧核、背内侧核和下丘脑外侧区。

At fertilization one male nucleus fuses with the gee nucleus to form the zygote, while the second male nucleus fuses with the primary endosperm nucleus to form a triploid cell, or more rarely a second diploid or a pentaploid cell that later gives rise to the ENDOSPERM.

受精作用发生时，一个精核与卵核融合形成受精卵，第二个精核与最初胚乳核融合，形成三倍体细胞，偶而也形成第二个二倍体或五倍体细胞，三倍体细胞最后发育为胚乳。

For example, prenatal fluoxetine exposure significantly altered the density of 5-HT transporters in subregions of the hypothalamus (dorsomedial nucleus,-21%; lateral hypothalamus,+21%), hippocampus (CA2,+47%; CA3,+38%), and amygdala (basolateral nucleus,+32%; medial nucleus,+44%) in prepubescent offspring.

比如，孕期氟西汀的使用显著地改变了青春期前后代大鼠的下列区域的5-羟色胺转运体密度：下丘脑（背内侧核，-21%，外侧下丘脑，+21%），海马（CA2，+47%；CA3，+38%）和杏仁核（底侧核，+32%，内侧核，+44%）。

A nucleus of the basal ganglia; it is located in each hemisphere just lateral to the globus pallidus, and it is connected to the anterior end of the caudate by a series of fiber bridges; the putamen and caudate together are the striatum.

基础神经节的中坚力量；它位於各个半球侧向对基底核苍白球，并且它被解救到尾核的先前末端由一系列的纤维桥梁；壳核并且尾核一起是大脑纹状体。

When EMS was applied, it was found that 2.0% EMS resulted the highest microkernel rate (15.6‰). Treating the materials with 2.0% EMS for 4 hours could lead to semi-lethal. Cytological observations found that chromosome aberration phenomena such as single microkernel, double microkernel, three microkernel, chromosome bridge, resort chromosome and syncytium were presented in the mutants.

EMS诱变途径中，浓度为2.0 %处理时间为4 h的组合获得最高的微核率（15.6‰），EMS浓度为2.0 %处理时间为4 h的组合使材料达到半致死；细胞学的观察看到了单微核、双微核、三微核、染色体桥、滞留染色体和合胞体等染色体畸变现象，再生苗中发现了1棵变异株。60Co辐射的诱变途径中，20Gy的剂量使不定芽半致死，再生苗中发现了1棵变异株。

One view is that the nucleocapsids get tegument in the nucleus, and by budding into perinuclear space, they obtain their envelope from the inner lamella of the nuclear membra...

一种意见认为，核衣壳在细胞核内获得被膜，并通过出芽在内层核膜处获得其囊膜后，进入核周间隙，进一步经与核周间隙相连接的内质网，以囊泡转运的方式经高尔基体到达细胞膜，囊泡膜与细胞膜融合，病毒颗粒释放到细胞外。

At G. 32W stable expression of nov mRNA was distributed in pontine abducens nucleus, red nucleus and substantia nigra of midbrain, ventral posterolateral thalamic nucleus and mediodorsal thalamic nucleus.

第32周脑桥展神经核、中脑红核和黑质、丘脑腹外侧核和背内侧核以及第38周大脑纹状体、顶叶皮质显示nov mRNA稳定的表达。

The acetated and hydrogenated urushiol dimer has been separated,and studied by hetero-J resolved 2D-NMR,homo- and heteronuclearchemical shift correlation 2D-NMR and long-range coupled chemicalshift correlation 2D-NMR.The results show that the urushiol dimerare most diphenyl and alkyl phenyl ether structures.Furthermore,IR and MS data also has conformed this structures.

本文将酶催化预聚后的生漆，催化加氢后，乙酰酯化，再进行离心旋转薄层层析，分离得到二聚体主要组分，用异核J分辨谱，同核化学位移相关，异核化学位移相关，远程偶合异核化学位移相关等2D—NMR技术，全面研究了其结构，得到了联苯型和烷基芳醚型聚合结构的结论。

Results A dense accumulation of fos and jun-positive neurons exhibited in the PVN, SON and DG, and some of fos and jun-positive neurons were also present in other hypothalamus and hippocampus areas including parvocellular PVN, dorsomedial nucleus and lateral hypothalamic area.

结果 游泳应激结束后3h，室旁核和视上核及齿状区内可见密集深染的c-fos和c-jun阳性细胞，室旁核小细胞部，背内侧核等区域亦有疏密不一的阳性胞体。

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。