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Survival of S. enterica serovar Typhimurium F98 parent and SPI-1 (spaS), SPI-2 (ssaU), and phoP mutant strains within A. polyphaga in axenic culture. The values are the mean numbers of Salmonella recovered ± standard errors of the means (error bars) from six replicate experiments. Salmonella was added at an MOI of 10 in these experiments.
