Figure 1.

Mean diameter (in pixels) of the zone of inhibition (ZOI), a measure of antibiotic resistance, across ancestor (time zero) and bacteria isolated from biofilms at 15, 30, and 60 days. Individual replicates appear as distinct colors connected with a line. The ZOI of the ancestor is plotted at time 0 as an open circle.

Tyerman et al. BMC Evolutionary Biology 2013 13:22   doi:10.1186/1471-2148-13-22
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