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1·Allergy 'barrier' Allergic conditions often run in families, which tells us that inherited genetic factors are important, she said.

变态反应“屏障”她说，“过敏体质经常累及全家人，这说明遗传因素是很重要的。”

2·The disease can be inherited, but until this study the genetic factors involved were largely a mystery to scientists.

这种疾病可以被遗传，但是在这项研究之前基因的因素对科学家们来说很大程度上是个迷。

3·Who is most at risk - inherited (genetic) factors?

谁最处在继承的(遗传的)危险因素中？