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    Did you mean DNA methylation?
    GlossaryDNA methylation

    chemical modification of DNA that can regulate gene expression

    DNA methylation is a biological process where a methyl group is added to the DNA molecule, typically at cytosine bases. This modification can change the activity of a DNA segment without altering the sequence, often leading to gene silencing. It's a crucial mechanism in regulating gene expression and is involved in various processes, including development, aging, and disease.

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