DEOXYRIBONUCLEIC ACID, GENOMIC;deoxyribonucleic acid sodium salt from E.coli strain B;Deoxyribonucleic acid sodium salt from Escherichia coli strain B;Deoxyribonucleic acids, Escherichia coli;Deoxyribonucleic acid，from lambda phage;DEOXYRIBONUCLEIC ACID TYPE VIII SODIUMFR OM ESCHERI;DEOXYRIBONUCLEIC ACID GENOMIC*FROM ESCHE RICHIA COLI;DEOXYRIBONUCLEIC ACID, HIGH MOLECULARWEI GHT, ESCHE
