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Serum sensitivities of mil mutants GT20 (belonging to group I) and GB109 (belonging to group V). Data are presented as percent survival in 50% normal human serum after 1 h of incubation at 37°C compared to that of the wild-type strain AA100. Values are the means of triplicate measurements, and the error bars represent standard deviations. Some of the error bars cannot be seen due to their small values.
