Some existing drugs which are known to interfere with stem cells' biochemical pathways could be used to attack them selectively.

一些现有药物可以阻碍干细胞的生化途径，因此可以选用这些药物来攻击肿瘤。

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Although the proposition of four types is not new (Plato, Jung), her nomenclature and their biochemical foundation represent a frontier of relationship science, albeit one that is thinly populated and open to flanking attack.

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