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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">DNA芯片数据存储破纪录 </h1> <p class="xg1"> 时间：2012-9-3 16:10<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(5319)</em> 评论: 0</p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=57" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>当说到存储信息，硬盘设备绝对无法同脱氧核糖核酸（DNA）相提并论。我们的遗传密码将数以亿计的千兆字节塞进重达1克的分子中，而仅仅1毫克的分子在将美国国会图书馆中的每一本藏书完全编码后还能够留下很多空地。</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content">当说到存储信息，硬盘设备绝对无法同脱氧核糖核酸（DNA）相提并论。我们的遗传密码将数以亿计的千兆字节塞进重达1克的分子中，而仅仅1毫克的分子在将美国国会图书馆中的每一本藏书完全编码后还能够留下很多空地。当然迄今为止，这一切都仅仅停留在<a href="http://theory.oecr.com" target="_blank" class="relatedlink">理论</a>的层面上。<BR> <BR>然而在一项新的研究中，研究人员在不足1微微克（1克的一万亿分之一）的DNA中存储了一本遗传学教科书的内容——这一进展将使我们存储数据的能力发生革命性的变化。<BR> <BR>有一些研究团队一直尝试在活体细胞的基因组中书写数据。但这种方法存在着两个最大的不利条件。首先，细胞会死亡——你绝对不会想让自己的期末论文就这么烟消云散；其次，细胞会复制，进而引入新的突变以改变数据。 <BR> <P><A href="http://www.oecr.com/data/attachment/portal/201209/03/160929rbbb449mr5bk94qw.jpg" target=_blank><IMG src="http://www.oecr.com/data/attachment/portal/201209/03/160929rbbb449mr5bk94qw.jpg"></A></P>科学家用DNA编码存储了一本教科书。<BR><BR>为了绕开这些问题，由美国波士顿市哈佛医学院的合成生物学家George Church领导的一个研究小组，根本没有使用细胞便创建了一个DNA信息存档系统。事实上，研究人员用一台喷墨式打印机将化学合成的DNA短链嵌入到一个玻璃微芯片的表面。为了编码一个数字文件，研究人员将其分割为小的数据块，并将这些数据转化为DNA的“4字母表”，A、C、G和T——而非典型的数字存储媒介1和0。每个DNA片段同时包含有一个数字“条形码”，它记录了前者在原始文件中的位置。阅读这些数据需要一部DNA定序器和一台计算机以重新按顺序装配所有的片段，并将它们转化回数字格式。计算机同时还具有纠错功能——每块数据都将被复制上千次，通过将其与其他拷贝进行比对，任何小故障都能够得到识别与修复。<BR> <BR>为了验证这套系统，研究小组利用DNA芯片编码了Church曾参与编纂的一部遗传学教科书。结果很成功。 <DIV><FONT color="#808080" size=2><IMG src="http://www.oecr.com/xwb/images/bgimg/icon_logo.png"> 已同步至 <a href="http://api.t.sina.com.cn/2200118572/statuses/3486211144794090" target="_blank">update的微博</A></FONT></DIV></td></tr></table> <!--[diy=diycontentbottom]--><div id="diycontentbottom" class="area"></div><!--[/diy]--> <script src="data/cache/home.js?eOg" type="text/javascript"></script> <div id="click_div"><table cellpadding="0" cellspacing="0" class="atd"> <tr><td> <a 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