Immunoprecipitation of hydroxymethylated DNA was performed with a mouse monoclonal antibody against 5-hydroxymethylcytosine (5hmC) using the hMeDIP kit (Diagenode, Cat. no. C02010031) following the manufacturer's instructions. DNA samples were sheared at 4°C using a Diagenode Bioruptor. DNA (1 μg) was used for each IP; recovered DNA was analyzed by real-time PCR (Table S3). Hydroxymethylated, methylated, and unmethylated DNA controls and primers for their amplification were provided with the kit.
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