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Survival of C57BL/6J mice infected with serovar Typhimurium. Raw survival numbers for the first LD50 experiment were classified into two groups representing high (107 to 109 CFU) (A) and low (103 to 106 CFU) (B) doses. The surviving number of mice represents the total tally from all doses in the high- and low-dose classes. The same analysis on the second LD50 experiment yielded similar results.
