DNA methylation is a kind of normal endogenous modified mode, which is fulfilled by DNA methylation transferase.

DNA甲基化是真核生物DNA的正常内源性修饰方式，它由DNA甲基化转移酶催化发生。

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The appearance and polarized light property of modified starch of different source and different modified mode were studied by polarizing microscope.

用偏光显微镜研究不同来源和不同变性方式的变性淀粉的形貌和偏光特性。

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The appearance and polarized light property of modified starch of different source and different modified mode were studied by polarizing microscope.

用偏光显微镜研究不同来源和不同变性方式的变性淀粉的形貌和偏光特性。

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