The prospect of graft loss is a problem faced by all transplant recipients, and retransplantation is often an option when loss occurs.
移植的远景是在所有移植受体面前的一个问题,当发生的时候再移植通常是一个选择。
Alternatively, a new version of a gene can also be created through reverse transcription: during gene expression, the mRNA is copied back into a sequence of DNA that is inserted into the genome.
其二,新的复本也可能透过反转录作用,将现出来的mRNA反转录成DNA序列,再插回组内,这种现象称为反转录移位(retrotransposition),发生在细胞内称为长散布核子(LINE)的转位子活动时。
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