purine

1. Objective To investigate the effects of heroin on plasma uric acid and purine nucleotides catabolism in rat spleen by testing the activities of adenosine deaminase ( ADA) and xanthine oxidase ( XOD).
   目的：研究海洛因依赖对大鼠血浆尿酸含量和脾中腺苷脱氨酶（ADA）、黄嘌呤氧化酶（XOD）的影响。
2. Determination of rumen microbial-nitrogen of sheep using urinary excretion of purine derivatives was studied.
   研究了用绵羊尿中嘌呤衍生物估测瘤胃微生物氮。
3. Uracil& a pyrimidine found in RNA that base-pares with adenine. a purine base found in DNA and RNA; pairs with cytosine.
   尿嘧啶&核糖核酸中的一种嘧啶，与腺嘌呤形成碱基对。DNA和RNA中的嘌呤碱，与胞核嘧啶成对。
4. The substitution of a purine for a pyrimidine, or vice versa is a transversion.
   嘌呤为嘧啶取代或嘧啶为嘌呤所取代，叫做颠换。
5. Effect of different dietary levels on excretion of urinary purine derivatives in young buffalo
   不同日粮采食水平对青年母水牛尿中嘌呤衍生物排出规律的影响研究
6. Determination of Purine Contents in Beer Brewing
   啤酒发酵过程中嘌呤含量的变化研究
7. Purine: Any of a class of heterocyclic compounds with a two-ring structure composed of carbon and nitrogen atoms.
   嘌呤：嘌呤是对由碳、氮原子组成的双环结构的杂环化合物的统称。
8. Synthesis of 2-chloro-6-N-aryl substituted purine derivatives
   2-氯-6-N-芳基取代嘌呤衍生物的合成
9. Research on the Absorption of Purine Compounds in Beer by Absorbents
   吸附剂对啤酒中嘌呤类物质吸附的研究
10. Synthesis and Properties of Purine Nucleoside and Nucleotide Derivatives; New Nucleoside Analogues from Shikimic Acid
    嘌呤核苷（酸）衍生物的合成及其性质研究莽草酸衍生的新型核苷类似物的合成研究
11. Binding of Purine Nucleotides to Brown Adipose Tissue Uncoupling Protein from Different Kinds of Animals
    不同动物棕色脂肪组织解偶联蛋白与嘌呤核苷酸结合之比较
12. Antifungal Activity of Caffeine Against the Significant Fungal Pathogens of Tea Plants Caffeine, a purine alkaloid, is a key component of tea and coffee.
    咖啡碱对茶树主要叶部病原真菌的抑制作用咖啡因是一种嘌呤生物碱，存在于茶和咖啡中。
13. Effects of Heroin and Purine Nucleotide Compensation on Neutral α-Glucosidase in Rat Epididymides
    海洛因及补偿嘌呤核苷酸对大鼠附睾中性α葡糖苷酶的影响
14. ConclusionThe exogenous supply of purine nucleotides can ameliorate the down-regulation of morphine on purine nucleotide anabolism key enzyme gene expression in PC12 cells.
    结论：外源性补充嘌呤核苷酸能改善吗啡所致的PC12细胞嘌呤核苷酸合成代谢关键酶基因表达降低。
15. Effects of supplemental magnesium propionate on urine purine derivatives and microprotein in Simmental steer
    丙酸镁对西门塔尔牛尿嘌呤衍生物和微生物蛋白的影响
16. Effect of purine nucleotides on conditioned place preference and acute withdrawal in chronic heroin dependent rats
    嘌呤核苷酸对慢性海洛因处理大鼠条件性位置偏爱与急性戒断的影响
17. Research Advance in the Determination Methods of Purine Compounds in Beer
    啤酒中嘌呤类物质测定方法的研究进展
18. A purine base found in DNA and RNA; pairs with cytosine.
    DNA和RNA中的嘌呤碱，与胞核嘧啶成对。
19. The purine and pyrimidine may be complexed with a sugar to produce a nucleoside.
    嘌呤和嘧啶可以同一个糖复合，产生一个核苷。
20. Effect of purine nucleotide on myocardial enzymes of heroin dependence and withdrawal rats
    嘌呤核苷酸对海洛因依赖及戒断大鼠心肌酶学的影响
21. Synthesis and Antibacterial Activity of 6-Substituted Amino Purine Derivatives
    6-取代胺基嘌呤衍生物的制备及抗菌活性研究
22. Purine base found in DNA and RNA; pairs with thymine in DNA and with uracil in RNA. Study on the Effects of Epinephrine and Norepinephrine in Mice Thymocytes Apoptosis
    DNA和RNA中的嘌呤碱，与DNA中胸腺嘧啶和尿嘧啶成对。肾上腺素、去甲肾上腺素对小鼠胸腺的影响
23. Purine nucleoside phosphorylase inhibitor screening using immobilized enzyme reactor by capillary electrophoresis
    基于毛细管电泳在柱酶微反应器技术筛选嘌呤核苷磷酸化酶抑制剂
24. Effect of purine nucleotides compensation on pain threshold in heroin dependent rats
    嘌呤核苷酸补偿对海洛因依赖大鼠痛阈的影响
25. Determination of Purine Derivatives and Creatinine in Yak's Urine and Plasma by HPLC
    高效液相色谱法对牦牛血浆与尿中嘌呤衍生物及肌酐含量的测定
26. Effects of glycerol on nutrient apparent digestibility and purine derivatives of urine in Simmental steel
    甘油对西门塔尔牛日粮养分表观消化率及尿嘌呤衍生物的影响
27. A nucleotide consisting of one molecule each of a phosphoric acid, a sugar, and either a purine or a pyrimidine base.
    单核苷酸磷酸、糖、嘌呤或嘧啶碱基中的一种，它组成的一个分子的苷酸。
28. The absorption methods of purine compounds in beer by several kinds of absorbents had been developed.
    建立了几种吸附剂对啤酒中嘌呤类物质吸附的方法。
29. Base pairing The bonding relationship between purine and pyrimidine bases in the nucleotides of DNA and RNA.
    碱基配对：在DNA和RNA的核苷酸中，嘌呤和嘧啶之间相匹配的关系。
30. Prokaryotic Expression and Functional Analysis of Purine Nucleoside Phosphorylase of the Key Enzyme for Ribavirin Produced
    合成利巴韦林的关键酶嘌呤核苷磷酸化酶的原核表达及活性分析

noun

1. a colorless crystalline organic base containing nitrogen

2. any of several bases that are derivatives of purine