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Cells from your mother likely infiltrated your brain in the womb, and they could survive for decades, study reveals
怀孕期间渗入儿童大脑的母体细胞在大脑中承担不同的工作,并可能持续到老年。
Predatory Sharks Grew to Enormous Sizes in Prehistoric Times. These Five Strategies Helped Them Get So Big
通过在子宫里吃掉它们的兄弟姐妹或避开食肉的上龙,像巨齿鲨这样可怕的食肉动物的体型膨胀到足以让今天活着的任何鲨鱼相形见绌