乙酰基

This result indicated that the best way to purify soybean agglutinin was GalNac-epoxy-Sepharose 6B.

这一结果表明大豆凝集素最理想的纯化方法是N-乙酰基-D-半乳糖胺-expoxy-sepharose 6B亲和层析体系。

Chitosan is obtained by N-deacetylation of chitin. It has a number of free amino group.

壳多糖是甲壳质脱乙酰基的产物，它含有大量的自由氨基。

MAIN OUTCOME MEASURES: Determination of the choline acetyltransferase activity in the groups.

主要观察指标：大鼠脑海马组织胆碱乙酰基转移酶活力的测定。

OBJECTIVE: To observe the changes of choline acetyltransferase activity in rat hippocampus after ischemia-reperfusion.

目的：观察大鼠脑缺血再灌注后海马组织胆碱乙酰基转移酶活力的动态变化。

Our data provide a molecular basis for the interplay of histone demethylation and deacetylation in chromatin remodeling.

这些数据为乳腺癌的脱甲基化和脱乙酰基化的研究提供了分子基础。

Recently chitin and chitosan have become of great interest not only as biopolymers, but also as a new functional materials of high potential in various fields ranging from a simple floccule for waste water treatment to medical materials such as for wound healing and prevention of infection.

甲壳素是一种天然多糖，脱除乙酰基的产物是壳聚糖，作为新型功能生物材料，它们已在水处理、日用化学品、生物工程和医药等领域得到了应用，但它们不溶于一般的有机溶剂，从而限制了其广泛应用。

Based on IR spectrum and HPLC chromatography, four polysacchharides had β-indican and characteristic absorbance of glucide without vitriol radical, galacturonic acid and acetyl.

红外光谱和其完全水解的高效液相色谱分析表明，4种多糖不含硫酸基团和乙酰基，具备β-糖苷键以及糖类特征吸收峰。

Acetylator phenotype ; 2－naphthylamine ; bladder cancer ; genetic risk factors

乙酰基转移酶表型； 2－萘胺；膀胱癌；遗传易感因素

Insects polysaccharide from insect crust are a natural macromolecular polymers that remove behind the acetyl group getting usually that paries draw, which are currently found only bring positive charge of the animals cellulose in the natural world- containing amino polysaccharide of high-molecular compound.

昆虫多糖是从昆虫体壁提取的甲壳素脱去乙酰基后得到的一种天然高分子聚合物，也是目前发现的自然界中唯一带正电荷的可食性动物纤维素——含氨基多糖的高分子化合物。

Alzheimer′s disease animal models were made by damaging bilateral nucleus basalis of Meynert of elderly rats (20-22 month) with quinolinic acid(150 nmol in 2 μL for each NBM, given d 3 after administration of test drugs). Activity of choline acetyltransferase was measured by radiochemistry assay. One time training passive avoidance step-down and water-maze spatial localization task were used to observe effects of ginsenoside of stem and leaf in combination with choline on learning and memory of AD model rats.

应用喹啉酸（每侧150 nmol，2 μL，给受试药后d 3注射）损毁老年大鼠双侧Meynert基底核制备阿尔茨海默病动物模型，放射化学法测定胆碱乙酰基转移酶活性，一次性训练被动回避跳台实验和水迷宫空间分辨能力测试，观察人参茎叶皂甙和胆碱合用对AD模型大鼠学习记忆的影响。

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。