Figure 2From: Rapid assessment of the effect of ciprofloxacin on chromosomal DNA from Escherichia coli using an in situ DNA fragmentation assayNucleoids from E. coli strain TG1 with progressively increased DNA fragmentation after incubation with increasing doses of CIP. 0: undamaged; I: low damage level; II: intermediate damage; III: high damage level; IV: massive fragmentation.Back to article page