Objective: CTCF is a multifunctional transcription factor, which plays many roles in promoter regulation, insulator function and genetic imprinting.

目的：CTCF是一种多功能的转录因子，参与启动子调控、绝缘子功能和遗传印记等过程。

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However, what science told us back in 1984 was that human females certainly could never have a natural virgin birth, because of a genetic barrier in mammals called imprinting.

然而1984年时候的科学去告诉我们，由于哺乳动物中存在被称作印记的基因障碍，所以说女性是绝不可能进行处子生育的。

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Conclusion Parental specific expression exists in the transmission of tic disorder, which gives evidence that genomic imprinting may be involved in the genetic mechanism of tic disorder.

结论抽动障碍的传递存在亲源特异性表达，抽动障碍病因学中可能存在遗传印迹机制。

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Conclusion Parental specific expression exists in the transmission of tic disorder, which gives evidence that genomic imprinting may be involved in the genetic mechanism of tic disorder.

结论抽动障碍的传递存在亲源特异性表达，抽动障碍病因学中可能存在遗传印迹机制。

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