Figure 6. Bactericidal antibiotics induce oxidative damage in mice.

Oxidative stress markers were measured in blood drawn from wild-type mice treated with ciprofloxacin (12.5 mg/kg/day), ampicillin (28.5 mg/kg/day), or kanamycin (15 mg/kg/day) for 2 or for 16 weeks. Data are means ± S.E.M. (n ≥ 3 animals per treatment group). Comparisons between treatments and untreated controls were made using a Student's t test (*p < 0.5, **p < 0.01).