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methylation Definition

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methylation
noun(meth-yl-a-tion)
the introduction of a methyl radical into a substance; especially : dna methylation
methylation
noun(meth-yl-a-tion)
the enzymatically controlled addition of a methyl group to a nucleotide base (such as cytosine in eukaryotes) in a molecule of DNA that plays a role in regulating gene expression (such as by the inhibition of genetic transcription)

Words Related to methylation!

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