嘌

Methods:Anti-rubella virus actions of synthesized adenine and uridine derivants and ethanol extract of rhubarb were studied in three kinds of cell cultures. CPE was used as observation index in BHK21 cell culture.

选用9种新合成的腺嘌呤衍生物、6种尿嘧啶衍生物及大黄醇提液，分别在BHK21、RNC和HNC细胞上进行了体外抗病毒试验。

The uricase is a kind of enzyme in the purine degeneration pathways of organism, the uric acid can be oxidated in allantoin, CO2 and H2O2, human does not have the uricase, therefore the uric acid accumulates in the vivo clinical organism such as the pathological change like gout.

摘要］ 尿酸酶是生物体内嘌呤降解代谢途径中一种酶，尿酸氧化生成尿囊素、CO2和H2O2，人体中没有尿酸酶，因此尿酸在体内的积累会出现临床机体的病变如痛风。

The prestent invention discloses the cDNA sequnce of a new human reduced NADH: ubiquinone oxidoreductase 14 KDa subunit (NADH-CoQ14KDa subunit). The protein coded with the sequence is the homolog of ox's NADH-CoQB14.5b subunit.

本发明提供了一种新的人还原型烟酰胺腺嘌呤二核苷酸－辅酶Q氧化还原酶14千道尔顿亚基（NADH：ubiquinone oxidoreductase 14 kDa subunit，简称为&NADH－CoQ 14 kDa亚基&的cDNA序列，该序列编码的蛋白是牛NADH－CoQB14.5b亚基的同系物。

Results There was an extensive staining with both P2X2 and P2X4 receptors positive neurons and nerve fibers localized in medulla oblongata. It was mainly localization in the nucleus tractus solitarius,Ⅻ nucleus and ventrolateral medulla of medulla oblongata. It also scattered throughout rest of medulla.

结果 P2X2和P2X4嘌呤受体的阳性神经元和阳性纤维在新生鼠和成年鼠的延髓都有广泛表达，主要分布在孤束核、Ⅻ颅神经核和延髓腹外侧区，延髓其他区域为散在的分布。

It was found that the effect of hydrogen bonds played an important role in increasing the stabilities of 2,6-dithiopurine hydrated tautomers and lowering the activation energies of proton transfer.

计算结果还表明，氢键作用在增大2，6-二巯基嘌呤氢键一水合物稳定性、降低质子转移异构化反应活化能等方面起着重要的作用。

The results showed that the dithione R is the most stable tautomer of all the tautomers in the form of isolated or hydrated isomers.

计算结果表明，2，6-二巯基嘌吟无论是孤立分子还是一水合物，其二硫酮式R是最稳定异构体。

Based on density functional theory and electronegativity equalization principle,applying an atom-bond electronegativity equalization σπ model,using a separated program,we calculated the charge distributions and dipole moments of guanine tautomers.

以密度泛函和电负性均衡原理为基础发展的原子-键电负性均衡方法的σπ模型。并结合自编程序，计算了鸟嘌呤五种异构体的电荷分布和偶极矩，计算结果表明，所计算出的电荷分布可以和从头算结果很好地关联。所计算的偶极矩与其它从头计算方法和力场方法相比总体趋势相同，进一步说明了ABEEMσπ模型的合理性

Cell wall-related protein genes,adenine and amino acid metabolism-related genes and CKⅡgenes were behaved high expression level during the development and mature of somatic embryos.The high expression level of the post-translation modification genes,such as SERK gene,was considered as a sign that proteins interacted complexly.It was proved that the development and maturity of somatic embryos was complex as the start-up and morphogenesis of somatic embryos.

体细胞胚胎发育与成熟要求较高水平的细胞壁相关蛋白基因、腺嘌呤与氨基酸代谢相关基因与CKⅡ基因；以SERK为代表的翻译后修饰基因在体细胞胚发育阶段的高表达被认为是复杂的蛋白质相互作用的标志，证明了体细胞胚的发育和成熟与起始发生和形态建成一样是相当复杂的。

Excised garlic scapes treated with 3H-labelled 6-benzyladenlne were stored under 25℃ in the dark for respectively 8, 5, 10, 15, and 20 days before they were sampled.

离体蒜苔饲喂带3H标记的6—苄基腺嘌呤后在暗中25℃下放置，分别在第 3、5、10、15、20天取样，进行放射性物质的分布分析。

The PD excretion in urine changes and it is not universal in different breeds. So it is exactly in need of kinds of models about different ruminants.

由于尿中嘌呤衍生物排出量受动物品种的影响很大，不同品种间无通用性，所以现有的研究成果不能用于中国品种牛，更难以使该方法应用于生产。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。