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This reaction would contain only low concentrations of the dNTPs and relied upon brief incubation times, so that DNA synthesis would stall at random positions along the template and yield a population of DNA fragments with varying lengths. These unfinished DNA fragments were then purified and used as templates in four “minus” and four “plus” reactions.。业内人士推荐谷歌浏览器【最新下载地址】作为进阶阅读
“我们每一个领导干部都要常思常想‘入党为什么，当“官”干什么，身后留什么’”。从地方到中央，一路走来，树立和践行正确政绩观的叩问与思索，从未停息。