当身体有一个遗传问题，比如伤疤组织或者一个基因疾病时，DNA必须首先改变。
When there is a genetic problem such as scar tissue or a genetic ailment, the DNA must be altered first.
这项研究的负责人弗兰克·布拉德克将伤疤组织比作路口的停车标志，它阻止了神经纤维的再生。
Lead investigator Frank Bradke likens scar tissue formation to "stop signs" that impede the regrowth of nerve fibers.
久而久之，这些病人会得心力衰竭病因为在心脏病突发中损坏的心脏肌肉组织最终会被僵硬的伤疤组织所替代。
Over time, those patients will develop heart failure because injured heart muscle tissue damaged by the heart attack will eventually be replaced by stiff scar tissue.
PET扫描对于癌症治疗后也有帮助，用它可以区分出留下的肿块是阳性肿瘤还是仅仅是死掉的组织或者是伤疤组织。
PET scans can also be helpful after treatment for a cancer, to sort out whether the remaining lump is active cancer or is just dead or scar tissue.
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.
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。”
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。”
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."
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