VOA慢速英语2014.09.14
[audio]http://sound.yywz123.com/tingbbs/voa/voa20140914.mp3[/audio]Two papers published in the journal Science discuss this protein, called GDF11. 两篇发表在<科学>期刊上的文章讨论了这种名为"GDF11"的蛋白质. Researchers at Harvard University in Cambridge, Massachusetts explain how GDF11 improved the brain and muscle ability of older mice. This protein is found in high levels in the blood of young mice. And it appears to help develop new blood vessels. 马萨诸塞州剑桥的哈佛大学的研究人员解释了GDF11如何改善年老老鼠的大脑和肌肉功能.研究人员在年轻老鼠的血液中发现了大量该蛋白质并有助于新血管生长. ___________________________________
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