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Susceptibility of the spirochete and round body forms of strain B31 (top panels) and strain S297 (bottom panels) of B. burgdorferi to the most effective concentrations of three antibiotics measured by dark-field microscopy. Tinidazole, metronidazole, and doxycycline effect on B. burgdorferi after 72-hour treatment.
Note: *P values <0.05 indicates statistical significance compared with control.
