Methylated nucleic acid analysis

A process for enriching nucleic acid fragments methylated in a sample of fragments acidonucleico, comprising the steps of: (a) contacting the sample of nucleic acid fragments with an antibody specific for a nucleoside methylated under conditions suitable for binding Antibodies to methylated nucleoside; (B) selecting nucleic acid fragments bound to antibody specific to a nucleoside metilado.caracterizado that: before step (a): chains of nucleic acid fragments in double stranded sonseparadas sample.