科学家研发出了新的鸡，下的蛋可以抗癌
<p><span word="The">The</span> <span word="eggs">eggs</span> <span word="laid">laid</span> <span word="by">by</span> <span word="a">a</span> <span word="group">group</span> <span word="of">of</span> "<span word="pampered">pampered</span>" <span word="hens">hens</span> <span word="in">in</span> <span word="the">the</span> <span word="UK">UK</span> <span word="contain">contain</span> <span word="something">something</span> <span word="special">special</span> <span word="in">in</span> <span word="their">their</span> <span word="whites">whites</span>.</p><p>英国有一些“养尊处优”的母鸡，它们下的蛋的蛋白里有一些特别的物质。</p><p><span word="After">After</span> <span word="researchers">researchers</span> <span word="from">from</span> <span word="the">the</span> <span word="University">University</span> <span word="of">of</span> <span word="Edinburgh">Edinburgh</span> <span word="spliced">spliced</span> <span word="a">a</span> <span word="human">human</span> <span word="gene">gene</span> <span word="into">into</span> <span word="the">the</span> <span word="chickens">chickens</span>' <span word="DNA">DNA</span>, <span word="the">the</span> <span word="animals">animals</span> <span word="began">began</span> <span word="laying">laying</span> <span word="eggs">eggs</span> <span word="boasting">boasting</span> <span word="a">a</span> <span word="significant">significant</span> <span word="amount">amount</span> <span word="of">of</span> <span word="two">two</span> <span word="proteins">proteins</span> <span word="used">used</span> <span word="to">to</span> <span word="treat">treat</span> <span word="diseases">diseases</span> <span word="including">including</span> <span word="cancer">cancer</span> <span word="in">in</span> <span word="humans">humans</span> - <span word="and">and</span> <span word="the">the</span> <span word="process">process</span>, <span word="they">they</span> <span word="say">say</span>, <span word="is">is</span> <span word="far">far</span> <span word="cheaper">cheaper</span> <span word="than">than</span> <span word="current">current</span> <span word="methods">methods</span> <span word="of">of</span> <span word="protein">protein</span> <span word="production">production</span>.</p><p>爱丁堡大学的研究者们向鸡的<span word="DNA">DNA</span>中插入了一段人的基因，于是这些动物下的蛋里现在富含两种蛋白质，这两种蛋白质能够用来治病，其中还包括人类的癌症。而且，他们说这个过程比现在生产蛋白质的方法要便宜得多。</p><p>"<span word="Production">Production</span> <span word="from">from</span> <span word="chickens">chickens</span> <span word="can">can</span> <span word="cost">cost</span> <span word="anywhere">anywhere</span> <span word="from">from</span> 10 <span word="to">to</span> 100 <span word="times">times</span> <span word="less">less</span> <span word="than">than</span> <span word="the">the</span> <span word="factories">factories</span>," <span word="researcher">researcher</span> <span word="Lissa">Lissa</span> <span word="Herron">Herron</span> <span word="told">told</span> <span word="the">the</span> <span word="BBC">BBC</span>. "<span word="So">So</span> <span word="hopefully">hopefully</span> <span word="we">we</span>'<span word="ll">ll</span> <span word="be">be</span> <span word="looking">looking</span> <span word="at">at</span> <span word="at">at</span> <span word="least">least</span> 10 <span word="times">times</span> <span word="lower">lower</span> <span word="overall">overall</span> <span word="manufacturing">manufacturing</span> <span word="cost">cost</span>."</p><p>研究员丽莎·赫隆告诉<span word="BBC">BBC</span>说：“这种用鸡来生产的方式的成本只有工厂生产的1/10-1/00。所以我们将会看到生产成本至少降低10倍。”</p><p><span word="The">The</span> <span word="human">human</span> <span word="body">body</span> <span word="naturally">naturally</span> <span word="produces">produces</span> <span word="the">the</span> <span word="proteins">proteins</span> <span word="found">found</span> <span word="in">in</span> <span word="the">the</span> <span word="new">new</span> <span word="hen">hen</span> <span word="eggs">eggs</span> - <span word="IFNalpha">IFNalpha</span>2<span word="a">a</span> <span word="and">and</span> <span word="macrophage">macrophage</span>-<span word="CSF">CSF</span>, <span word="if">if</span> <span word="you">you</span>'<span word="re">re</span> <span word="wondering">wondering</span> - <span word="and">and</span> <span word="they">they</span> <span word="each">each</span> <span word="play">play</span> <span word="an">an</span> <span word="important">important</span> <span word="role">role</span> <span word="in">in</span> <span word="the">the</span> <span word="immune">immune</span> <span word="system">system</span>.</p><p>人体天然就会制造这些鸡蛋中的那两种蛋白质——你可能好奇它们叫什么，它们叫<span word="IFNalpha">IFNalpha</span>2<span word="a">a</span> 和 <span word="macrophage">macrophage</span>-<span word="CSF">CSF</span>——它们都在免疫系统里起着重要的作用。</p>
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