Much like a newt that has lost a limb, these mice will replace missing or damaged tissue with healthy tissue that lacks any sign of scarring.

就像一只失去了肢体的蝾螈，这些老鼠将用没有任何疤痕迹象的健康组织代替缺失或受损的组织。

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Professor Ellen Heber-Katz, the lead scientist, said: "Much like a newt that has lost a limb, these mice will replace missing or damaged tissue with healthy tissue that lacks any sign of scarring.

首席科学家艾伦.赫博.卡茨教授指出，"就像断肢的蝾螈一样，这些老鼠将会用健康的组织来取代那些受损甚至缺失的组织，而且不会留下任何伤疤.

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Brazilian and French ships and planes were looking for any sign of the missing plane, authorities said.

官方说，巴西和法国已经启用轮船和飞机来搜寻失踪飞机的相关迹象。

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They are scouring Providence, Rhode Island, and nearby cities for any sign of the missing 22-year-old man.

CNN: Few clues in search for missing Brown University student

Over the weekend, search efforts intensified as boats, helicopters and divers scoured the area for any sign of the missing plane.

CNN: STORY HIGHLIGHTS

But physicists have learned to take the need for such fine-tuning, as the precision fiddling is known in the argot, as a sign that something important is missing from their picture of the world.

ECONOMIST: The hunt for physics��s most elusive quarry is over