嘌

The basic group has five kinds, respectively be adenine, guanine, cytosine, thymine and uracil.

碱基有五种，分别为腺嘌呤、鸟嘌呤、胞嘧啶、胸腺嘧啶和尿嘧啶。

There are four bases, called adenine, thymine, guanine, and cytosine.

共有四个碱基：腺嘌呤、胸腺嘧啶、鸟嘌呤和胞嘧啶。

In SGC-7901 cells, 5-Fu can interfere with the DNA synthesis and result in the reduction of the DNA content. Besides, it can affect the unsaturation degree of the hydrocarbon chains and alter the external environment of guanine and adenine residues in cancer cells.

这说明5-氟尿嘧啶可以影响DNA的复制合成，降低胃癌细胞中DNA的含量，并且影响癌细胞中脂肪酸链的饱和度以及鸟嘌呤和腺嘌呤的外环境，正常细胞拉曼谱的改变说明5-氟尿嘧啶存在一定的副作用。

On the basis of spectroscopic analysis, they were identified as adenine, adenosine, ura...

根据光谱分析分别鉴定为：腺嘌呤，腺嘌呤核苷，尿嘧啶，尿嘧啶核苷和D-甘露醇等。

In a nutshell, purine is a white, crystalline compound that includes uric acid, caffeine, and xanthine.

在坚果壳里，嘌呤是一种白色的结晶物，其中含有尿酸、咖啡因和黄嘌呤。

Through three-step continual EMS mutation, the adenine autotrophy strain(Ml-3) and the adenine-requiring revertant strain(M2-8) were screened successively, and the resistant strain(M3-20) to ammonium ion variant was further screened.

将MY-1经连续3次EMS诱变，依次选育富含核黄素的腺嘌呤营养缺陷型菌株(M1-3)和腺嘌呤缺陷型的回复突变株(M2-8)。

Esculetin had the highest affinity toward the binding site of XO, and this was due to hydrogen bonding interactions. The hydroxyl group at C-6 formed hydrogen bonds with the carboxyl group Glu802 that played critical role on XO binding.

在8种香豆素衍生物中发现esculetin与黄嘌呤氧化酶的亲和力最高，因为在esculetin的结构上，C-6的OH基团可与麸胺酸802的COOH基团形成氢键，此键结对於抑制黄嘌伶氧化酶活性是很重要的，因而增加了两者结合的稳定性。

Purine derivatives was confected tosolution of 3*10~(-5) g/mL by sodium hydroxide solution(1 weight% in water), and thenmeasured the diameter of fungistatic circle.

将实验所得嘌呤化合物溶解于质量浓度为1％的氢氧化钠水溶液中，通过测量抑菌圈直径的大小来测试了所有所得嘌呤衍生物的抑菌活性。

The Stille coupling reaction between 8 iodo 9 benzyl 9H purine and RSnBu 3 (R=vinyl,2 thienyl,2 furyl,phenylethynyl and phenyl) was studied using (Ph 3P) 2PdCl 2 as catalyst and DMF as solvent.

采用 (Ph3 P) 2 PdCl2 为催化剂，DMF为溶剂，对 8 碘 9 苄基 9H 嘌呤与有机锡试剂RSnBu3 (R=乙烯基、2 噻吩基、2 呋喃基、苯乙炔基和苯基等)之间的 Stille偶合反应进行了研究，合成出了5种 8位取代的嘌呤衍生物。

MethodsOur study was to treat gastric ulcer by invigorating spleen and benefiting vital energy Chinese drugs through clinical observation and experimental research, and compared with mucosa protectant -gastropine and H2 receptor antagonist -famotidine about the mucosa mitochondrion 8-oxygen guanine DNA glycosylase, thymine glycol DNA glycosylase,3-methyl adenine DNA glycosylase, the effect of gastralgia, splenic asthenia and quality of ulcer recovery.

比较健中愈疡片、黏膜保护剂胃舒平以及H2受体拮抗剂法莫替丁对胃黏膜线粒体 8－氧鸟嘌呤DNA糖基化酶、胸腺嘧啶乙二醇DNA糖基化酶、3－甲基腺嘌呤DNA糖基化酶的影响，并进行健脾益气方药与黏膜保护剂胃舒平以及H2受体拮抗剂法莫替丁对胃溃疡愈合质量的比较和评价。

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。