un-nicked circular dna can be separated from protein , rna , and other dna in a simple three-step protocol consisting of exonuclease iii digestion , extraction with benzoylated naphthoylated deae-cellulose ( bnd cellulose ) in 1 m nacl , and alcohol precipitation of the remaining supercoiled dna .
C0012925
circular dna
C0012854
dna