They studied the pictures for signs of AMD and to see whether smoking influenced the womens chances of developing the disease.
VOA: special.2010.03.09
This hasn't really been studied but my guess is they become worse and worse for the reason I mentioned before.
原因还没有研究 但我猜测,导致人们的估测越来越遭的原因我提起过
As we've found cells from adult organisms that seem to be multipotential and studied them more carefully, some of their potentials turn out to be lost, they're not exactly the same.
因为我们在成人机体中找到,这些看上去是多能干细胞的细胞后,仔细研究后发现它们的一些潜能已经丢失,和胚胎中的那些并不一样
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