cytosine

1 For the past two years this DNA was said to have the strange property of lacking cytosine, a feature obviously impossible for our model.

2 Guanine became adenine, for instance; cytosine became thymine.

3 There are several options to deliver the cytosine gene.

有几个选项，以提供胞嘧啶基因。

4 Currently, the most active area of research involves introducing one of the cytosine genes into the cancer cell.

目前，最活跃的研究领域涉及引进一个胞嘧啶基因进入肿瘤细胞。

5 Kim is optimistic that the field will promptly figure out solutions for the cytosine editors.

6 The team looked at methylation, in which a methyl group is placed onto cytosine in DNA sequences.

工作小组关注甲基化作用，是指一个甲基群被放在DNA序列的胞嘧啶上面。

7 According to Scientific American, in a test tube, Benner and his team added modified cytosine and guanine into DNA molecules.

8 The DNA base composition is 32.6 - 33.1 mol % guanine plus cytosine.

DNA(脱氧核糖核酸)的G+C 摩尔百分含量为32.6—33.1.

9 The most abundant bases are cytosine, thiamine , and uracil ( pyrimidines ) and adenine and guanine ( purines ) .

最丰富的碱基是胞嘧啶, 胸腺嘧啶, 尿 嘧 啶,腺嘌呤和鸟嘌 呤.

10 There are different potential ways to store this information in DNA - for example, a zero in binary code could be represented by the bases adenine or cytosine and the one represented by guanine or thymine.

11 The two nucleobases, called cytosine and thymine, newly identified in the meteorites may have eluded detection in previous examinations because they possess a more delicate structure than the other three, the researchers said.

12 Adenine always binds with thymine, and cytosine always binds with guanine.

13 The amount of adenine, thymine, guanine, and cytosine varies from species to species and is found in equal quantities.

14 The mutation involves expansion of a section of DNA in which six bases — four guanine bases followed by two cytosine — are repeated many times.

15 Two potential Wells are found. One corresponds to the normal cytosine, while the other corresponds to its imino tautomer.

发现有两个势阱：其中一个对应正常的胞嘧啶，而另一个则对应它的顺式亚胺式互变异构体。

16 Three of them are altered versions of cytosine, one of the original four bases.

17 The DNA of life on Earth naturally stores its information in just four key chemicals—guanine, cytosine, adenine and thymine, commonly referred to as G, C, A and T, respectively.

18 The fundamental building blocks of DNA are the four bases adenine, cytosine, guanine and thymine.

19 There are just four kinds: adenine, thymine, guanine and cytosine.

只有4种: 腺嘌呤 、 胸腺嘧啶 、 鸟嘌呤和胞核嘧啶.

20 Adenine pairs with cytosine and guanine pairs with thymine.

1 胞嘧啶

c.

2 化学分子式

DDT EDTA GHB BZP salt alcohol formula cholesterol glucose caffeine cocaine heroin nicotine propane ammonia methane serotonin ether dopamine silica alum octane LSD morphine TNT methamphetamine ibuprofen methanol acetone urethane amphetamine choline formaldehyde creatinine urea glutamine warfarin menthol histamine codeine benzene ethylene butane borax retinol paracetamol tryptophan sucrose tyrosine taurine leucine phenol glucosamine styrene glyphosate glycerol capsaicin propylene dioxin ketamine homocysteine arginine xylitol lysine quercetin chloroform methotrexate alumina glycine zirconia camphor diazepam acetylene cysteine melamine ephedrine metronidazole catechin cisplatin naproxen alanine toluene methionine quinine isoflavone ethane bupropion thyroxine purine phenylalanine inositol allicin hexane saccharin acetaldehyde hydroquinone acrylamide atropine fluorescein magnesia betaine serine propranolol aniline colchicine adenine proline sorbitol diphenhydramine chlorhexidine Pyridoxine theobromine noradrenaline vanillin histidine coumarin hydrazine tetrahydrocannabinol naphthalene guanine mescaline valine isoniazid mannitol indomethacin thymine pyrimidine isopropanol threonine tyramine phenolphthalein alizarin butadiene heptachlor zidovudine phosgene allantoin trichloroethylene nitrofurantoin isoprene cetane benzocaine ornithine uracil nitroglycerine benzaldehyde pyridine acetonitrile cyanogen pentane cystine imipramine carbaryl asparagine butanol halothane nitromethane pyrrole heptane rotenone chloral isobutane imidazole phosphine creatine Aldrin chlordane acrylonitrile ethylbenzene nitrobenzene perchloroethylene dopa dieldrin thymol indole phthalocyanine tris benzoin quinoline iodoform pentazocine lithia Amytal nicotinamide hyoscine isoleucine catechol cyclohexane acridine phenothiazine propanol ethylenediamine paraldehyde hyoscyamine apomorphine cresol levamisole lignocaine temazepam phorbol deoxyribose alloxan piperazine sulphanilamide resorcinol tolbutamide diazomethane trichloroethane terbutaline pyrrolidone pyrene eugenol silane benzopyrene sphingosine menadione naphthol cyclopropane disulfiram ethambutol ninhydrin spermine anthracene psoralen hypoxanthine physostigmine stilbene dehydrocholesterol spermidine acetamide santonin litharge papaverine pyrogallol baryta dioxane thiourea furfural haematoxylin frusemide piperidine thiomersal dapsone dichlorvos zineb maneb tetrahydrofuran isooctane iproniazid guanidine dimercaprol tryptamine pirimicarb metaldehyde timolol geraniol furan gossypol caprolactam cementite enflurane chloroprene tacrine squalene pinene cyanamide anthraquinone acesulfame benzoquinone hypericin flavone cannabinol phenanthrene phenylenediamine aldol pyrrolidine muscimol cinchonine ribitol diphenylamine thiazole fuchsin trichlorophenol rosaniline dithizone diborane tropolone cumene triazole barbitone citral decane tetrafluoroethylene thiram azobenzene dihydroxyacetone diquat xanthene muscarine octopamine coniine geranial isobutylene guaiacol acetanilide galactosamine morpholine thoria erythritol biguanide cacodyl purpurin coumarone isatin indene indican orcinol sarcosine creosol tetrazole ketene nonane indigotin strontia phenylthiocarbamide carbazole oxazole salicylic acid nitrogen dioxide cream of tartar white arsenic ascorbic acid quinic acid tartar emetic ammonium carbonate chloric acid hippuric acid glucuronic acid arachidonic acid neuraminic acid nicotinic acid usnic acid uric acid pyruvic acid nalidixic acid ethacrynic acid maleic acid ellagic acid tartaric acid phthalic anhydride caprylic acid picric acid adipic acid isethionic acid phosphoric acid toluidine blue pyrophosphoric acid gallic acid citric acid methacrylic acid caproic acid fumaric acid metaphosphoric acid microcosmic salt ethylene oxide propionic acid valproic acid malonic acid myristic acid lysergic acid