FIG. 4.
Effect of each fractionated regimen on the total and less-susceptible Y. pestis populations for the first dose fractionation study. (The effects of the antibiotic on the total bacterial population are also shown in Fig. 3A.) The moxifloxacin MICs for the less-susceptible populations were at least 1.5× and 2.5× higher than that for the parent strain.