A new study shows that exposure to two specific 'forever chemicals' may accelerate biological aging, especially in middle-aged men. Researchers revealed a link between faster epigenetic aging, and two of these alternatives, PFNA and PFOSA, a precursor of PFOA.

· · 来源：monitor资讯

（二）违反规定，在场内燃放烟花爆竹或者其他物品的；

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* 在 iOS 平台使用 NSData

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