黄嘌呤的

HX: That's admirable, but I'm afraid it would be unusual!

黄嘌呤：这是令人钦佩的，但我恐怕将是不寻常的！

Our results suggest that the chemical structure and number of hydroxyl groups on the benzene ring of coumarin were correlated with the effects of ROS suppression.

结果发现所有的香豆素衍生物都具有抑制黄嘌呤氧化酶活性的能力，且其抑制型态属於竞争型抑制剂。

As a strong hypoxanthine nucleoside monophosphate dehydrogenase inhibitors, inhibition of IMP, thereby preventing viral DNA synthesis.

为一种强的单磷酸次黄嘌呤核苷脱氢酶抑制剂，抑制IMP，从而阻碍病毒核酸的合成。

Many studies of phosphorus,glucose,hypoxanthine and cytoplasmic factors on early embryo developmental block carried out by different methods such as morphology,biochemistry,molecular biology and micromanipulation have been reviewed.

对此，人们用形态学、生物化学、分子生物学、显微操作等手段开展了磷酸、葡萄糖、次黄嘌呤和细胞质因素对早期胚胎发育阻滞的影响的研究。

Objective To observe the fluctuation of uric acid in serum on mouse after replicating model by using hypoxanthine and uricase inhibitor. Make certain the most proper approach and solvent for using uricase inhibitor.

目的 本实验考察次黄嘌呤、尿酸酶抑制剂复制大鼠代谢性高尿酸血症模型，观察造模后受试动物血清尿酸的变化，以确定尿酸酶抑制剂造模的最佳造模途径和溶剂。

Two modified beacons containing of uracil and hypoxanthine have been used to validate the assay on purified proteins with success. However, while applying the assay to cell extracts, the results were interfered by non-specific nuclease activities.

我们分别设计其中含有尿嘧啶以及inosine的分子信号，以测定尿嘧啶-核酸醣解酶（uracil-DNA glycosylase）以及次黄嘌呤-核酸醣解酶（hypoxanthine-DNA glycosylase）的活性。

A human promyelocytic leukemia cell mutant (HL-60-AR) with deficiency in HGPRT and resistance to 8-AG was established by treat〓nt of the HL-60 cells with MNNG and prescreened in 0.3% agar RPMI-1640 semisolid medium containing 8-AG. The mutant cells show the following characteristics:(1) resistant to cytotoxic action of 8-AG and growing vigorously in medium containing 20ug/ml 8-AG;(2) capable of forming 〓〓 colonies in soft agar medium in the presenee of 8-AG:(3) highly sensitive to HAT selective medium and fail to growing in HAT medium of form colonies in soft agar medium containing HAT;(4) completely deficinet in HGPRT activity; and (5) no radioactive silver grains over the mutant cells due to the absence of -hypoxanthine incorporation showed by radioautography.

一、用MNNG诱变和8-AG进行抗性筛选，成功地建立了一株抗高浓度8-AG和完全缺失HGPRT活性的人早幼粒白血病细胞突变株(HL-60-AR)，该细胞能抵抗8-AG的毒性作用，对HAT选择培养基十分敏感，检测不到HGHRT活性，不能参入〓H一次黄嘌呤。

Keeping drinking tea helps maintain the regular balance of acid base of blood, for tea leaf, which is a kind of wonderful alkalescence drink, contains some alkaloid substances such as theine, theosine, theobromine and xanthine.

饮茶能维持血液的正常酸碱平衡。茶叶含咖啡碱、茶碱、可可碱、黄嘌呤等生物碱物质，是一种优良的碱性饮料。

Methods:The subcutaneous adipose tissue was obtained from the fold inguen of four SD rats, then digested with collagenase type Ⅰ and cultured in endothelial medium for seven days.

获取4只雄性SD大鼠鼠蹊部皮下脂肪，通过机械分割和组织消化法获取脂肪基质细胞，在内皮细胞培养液中培养7d后，经免疫细胞化学及透射电镜鉴定证实95%以上细胞已具内皮细胞表型特征，再将这些细胞进行成脂(DMEM/F-12培养基内加入0.5mmol/L1-甲基-3-异丁基-黄嘌呤，1μmol/L地塞米松，10μmol/L胰岛素，200μmol/L吲哚美星)定向诱导7d，形态学观察和油红O特殊染色鉴定诱导后的细胞。

Methods With the model of aging mice induced by D-gal, the learning memory ability of mice was measured by using Y-maze, the contents of SOD and MDA in the cerebrums were determined by xanthine oxidation or TBA colorimetry ,the variations of above indices of mice after treatment with NGD were observed.

建立 D-半乳糖致小鼠衰老模型，以 Y型电迷宫检测其学习记忆能力，分别采用黄嘌呤氧化酶法、TBA比色法测定大脑 SOD活性和 MDA含量，观察小鼠服用神经生长液后上述指标的变化。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。