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Changes of body weight in NMRI mice inoculated with 3 × 106 to 4 × 106 CFU of S. aureus 8325-4 (rsbU), SH1000 (rsbU+), or MJH502 (sigB mutant). Data from two experiments are pooled (n = 20 per group). Data shown are means ± standard errors of the means. Comparisons were made by using the Mann-Whitney U test.
