How do I remove the RNA contamination from purified DNA?

One can incubate the RNA-contaminated DNA samples with 4ul RNase A (100 mg/ml) for 2mins at room temperature. Scale up the enzyme amount if digestion is incomplete or extend the incubation time. After enzyme digestion, remove the RNase A by QIAamp DNA micro kit following the Cleanup of Genomic DNA protocol.


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