Isolation of Covalently Closed Circular Deoxyribonucleic Acid from Bacteria Which Produce Exocellular Nuclease

AUTOR(ES)
RESUMO

Reproducible yields of covalently closed circular (plasmid) deoxyribonucleic acid were obtained from mutants defective for extracellular nuclease but not from the corresponding wild-type strain of Serratia marcescens

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