from results indicating that the antibiotic resistance of s. faecalis bio-4r was not transferred to recipient bacteria , that the organism did not produce enzymes which inactivated antibiotics , and that the presence of covalently closed circular dna was not demonstrated by dye-cesium chloride buoyant density gradient centrifugation , it was concluded that the organism did not carry such a plasmid .
C0004611
bacteria
C0029235
organism