The result is a cell that's very similar but it is - very similar to the progenitor cell but it's exactly the stem cell.
另一个结果就是产生一个,很像祖细胞的细胞,但却是如假包换的干细胞
They are RNA molecules but they have at some points in their life span, they have amino acids attached to them.
这些是如假包换的RNA分子,但在其生命周期的特定时间,它们会携带一个氨基酸分子
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