自己写的专业英文，求大神帮忙改一下语法错误，谢谢！

2025-02-13 03:14:36

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回答1：

So far, has reported more than 100 genes, they are considered by) domain (imprinting control area), is a rich source of CpG island methylation and differences.)Domain the methylation of promoter alter the structure of chromosome, and downstream gene silence.)Also can adjust the way of the genes in a remote control.There are two kinds of mechanism is a process that describes the recent research.

One is the Igf2 - H19 example.Igf2 (insulin-like growth factor type 2) gene is located in the upstream of 90 KB H19 gene encodes a long non-coding RNA.Have a ICR domain live 2 KB H19 promoter and enhancer sequences upstream of downstream.In his father's gametes, ICR methylation cause H19 promoter methylation in a clear way.Therefore, the H19 oppression in his father's chromosomes and Igf2 can express.Maternal gametes, ICR domain by CTCF is unmethylated and protein.CTCF is a zinc finger protein and unmethylated sequence and interaction between as insulators to prevent agent and Igf2 sponsors, resulting in inhibition of Igf2.Therefore, the differences of methylation ICR silent seal genes18 associated.

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