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1·A self cleaving ribozyme was comprised of a hammerhead ribozyme and its target sequence located the downstream of the hammerhead ribozyme.

在锤头型核酶下游增加一段核酶作用的靶序列，使之成为自切割的核酶。

2·Objective to detect the cleavage activity of Giardia Canis virus (GCV) transfer vector-mediated hammerhead ribozyme for KRR1 in vitro transcript.

目的检测犬贾第虫病毒介导的锤头状核酶对犬贾第虫滋养体核仁功能性蛋白krr1基因体外转录体切割效率。