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DNA methylation is the covalent addition of methyl groups to DNA bases, typically the cytosine of CpG dinucleotides. It is catalyzed by methyltransferase enzymes using a S-adenosyl methionine ...

A ladder had to be removed from a sewer before it caused a "severe blockage" in the network, a utilities provider has said. Yorkshire Water said the extending ladder was found in Dewsbury by its ...