Relative fitness of the variants when co-cultured in shaken tubes with the wildtype parental strains. A value above 1 indicates the variant has a competitive advantage over the parental strain. The asterisk indicates a mean fitness that is significantly higher than 1 (p<0.05).
Workentine et al. BMC Microbiology 2013 13:175 doi:10.1186/1471-2180-13-175