
NNNK - YouTube
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NNK - Wikipedia
Nicotine-derived nitrosamine ketone (NNK) is one of the key tobacco-specific nitrosamines derived from nicotine. It plays an important role in carcinogenesis. [1] . The conversion of nicotine to NNK entails opening of the pyrrolidine ring. NNK can be produced by standard methods of organic synthesis. [2]
饱和突变中,密码子里面的B,D,K,S,R分别对应哪几种碱基?
2021年3月3日 · 饱和突变的密码子根据突变的选择不同,密码子可以分为 nnn, nnk, nns, ndt, dbk, nrt等。除了 n代表 atcg四种可能性外,其… 显示全部
NK Ending Blend Sound | NK Blend Song and Practice - YouTube
This animated phonics song helps children learn the sound of the ending blend NK in English. A blend is a combination of letters where each letter makes its...
Tobacco-specific nitrosamines - Wikipedia
Among the tobacco-specific nitrosamines, nicotine-derived nitrosamine ketone (NNK) and N-nitrosonornicotine (NNN) are the most carcinogenic. [1] Others include N ′-nitrosoanatabine (NAT) and N-nitrosoanabasine (NAB). NNK and its metabolite 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL) are potent systemic lung carcinogens in rats ...
4-甲基亚硝胺基-1-3-吡啶基-1-丁酮(NNK) - ChemicalBook
ChemicalBook 为您提供4-甲基亚硝胺基-1-3-吡啶基-1-丁酮(NNK)(64091-91-4)的化学性质,熔点,沸点,密度,分子式,分子量,物理性质,毒性,结构式,海关编码等信息,同时您还可以浏览4-甲基亚硝胺基-1-3-吡啶基-1-丁酮(NNK)(64091-91-4)产品的价格,供应商,贸易商,生产 ...
Mechanisms of Cancer Induction by Tobacco-Specific NNK and …
Although several tobacco agents play a role in the development of tumors, the potent effects of 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and N'-nitrosonornicotine (NNN) are unique. Metabolically activated NNK and NNN induce deleterious mutations in oncogenes and tumor suppression genes by forming DNA adducts, which could be ...
Nicotine-Derived Nitrosamine Ketone - ScienceDirect Topics
Nicotine-derived nitrosamine ketone (NNK), or 4- (methylnitrosamino)-1- (3-pyridyl)-1-butanone, is a carcinogenic nitrosamine that is present in tobacco smoke and is activated by CYP2A3/6.
N-亚硝基降烟碱 - 百度百科
N-亚硝基降烟碱是一种化学式为C9H11N3O,分子量为177.2031的有机物。 2017年10月27日, 世界卫生组织 国际癌症研究机构公布的致癌物清单初步整理参考,N'-亚硝基降烟碱(NNN)和4-(N-甲基亚硝胺基)-1-(3-吡啶基)-1-丁酮(NNK)在一类致癌物清单中。 [1] N-亚硝基降烟碱是一种化学式为C9H11N3O,分子量为177.2031的有机物。 2017年10月27日,世界卫生组织国际癌症研究机构公布的致癌物清单初步整理参考,N'-亚硝基降烟碱(NNN)和4-(N-甲基亚硝胺 …
娜娜捏口俱乐部 | 中国偶像 Wiki | Fandom
我們是廣州女子偶像團體『娜娜捏口俱樂部』,以廣州為中心活動的偶像團體,以全國巡演為目標努力奮鬥中。 成立於2022年1月,2022年2月20日MTL GZ1.0首演。 現場氛圍活潑有趣,仿佛身處遊樂園之中,翻唱了許多祭典風格的歌曲,深受觀眾喜歡。 1號成員@NNNK-鹼性螢火 (初始成員,加入於2022年1月) 2號成員@NNNK-Dokidoki (初始成員,加入於2022年1月) 3號成員@NNNK-阿巴阿巴禿 (初始成員,加入於2022年1月) 4號成員@NNNK-反向暴走小廢 (初始 …