...改变的碱基与脱氧核糖间的糖苷键,使改变的碱基脱落,在dna上产生一个缺嘌呤或缺嘧啶的位(apurinic-or apyrimidinic-site,ap site),再藉切除修复机制进行修复。 现知至少有20种不同的dna糖苷酶,各具特异性。
基于2个网页-相关网页
...改变的碱基与脱氧核糖间的糖苷键,使改变的碱基脱落,在dna上产生一个缺嘌呤或缺嘧啶的位(apurinic-or apyrimidinic-site,ap site),再藉切除修复机制进行修复。 现知至少有20种不同的dna糖苷酶,各具特异性。
基于2个网页-相关网页
以上来源于: WordNet
To supplement high school AP-prep classes, the Web site compiles material relevant to all three subjects, including video clips, exam questions, and practice problems.
作为对原有内容的补充,课程计划网站编辑整理了诸如视频剪辑、考试真题和练习题等与这三科相关的内容。
Men operating a bicycle crank pump refuel cars at the site of a gas station in the earthquake- and tsunami-destroyed town of Minamisanriku, northeastern Japan. (AP Photo/David Guttenfelder)
日本东北部,被地震和海啸摧毁的南三陆町市。人们在一个加油站边运行一个脚踩曲轴泵给汽车加油。
Methods Recording the number of licking responses and determining the histamine content in the blood and in the skin of 4-aminopyridine (4-AP )-injected site after the induction by 4-AP injection.
方法用4 氨基吡啶(4 AP)诱发小鼠舔体反应与肥大细胞释放组胺,记录小鼠的舔体反应,并测定小鼠注射4 AP局部皮肤与血中组胺含量。
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