易感基因检测呈阴性还不能说明问题，家族成员有无病史才是关键。

Unless a mutation is identified in the family, a negative test result doesn't provide reassurance.

youdao

易感基因检测呈阴性还不能说明问题，家族成员有无病史才是关键。

Unless a mutation is identified in the family, a negative test result doesn't provide reassurance.

youdao