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人体的细胞几年就会更新 一次?
설명
人体细胞是有寿命的,每天都在更新,衰老死掉的细胞会被新的代替。
全身的细胞全部替换掉,需要经过七年,也就是在生理上,我们每过七年就拥有一个新的身体。
细胞的更替是循序渐进的,并不会在同一时刻全部换掉,不同的细胞代谢的时间和间隔都不同。
人的大脑细胞是永久不变的,所以,就算身体经过了七年的更新周期,你的脑子依然还是同一个。
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