The new cells also produced all the molecules known to be characteristic of stem cells and, when grown in bulk, organised themselves into three-layered structures characteristic of embryos.

新的细胞也产生了所有具备干细胞特征的分子结构。 随着不断的繁殖，最终形成一个具备胚胎特征的三层组织。

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Carbon nanotubes could also be used to build much more complicated, three-dimensional structures than silicon, which can only be layered so many times for structural reasons.

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