Figure 4.

Distribution of the combined resistance values measured for the six antibiotics used. The bars indicate the numbers of isolates with combined resistance values in 0.5 increments. The grey line shows a theoretical normal distribution for a population with the same size and mean value.

Voolaid et al. BMC Microbiology 2012 12:225   doi:10.1186/1471-2180-12-225
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