As a result, every transplanted cell glowed under ultraviolet light and was easy to trace.

因此，每一个移植的细胞发光紫外线光下是很容易追查。

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The steps are easy to trace back.

易于将这些步骤倒退回去。

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The steps are easy to trace back.

易于将这些步骤倒退回去。

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