Figure 1.C. difficile strains exhibit different clinical outcomes in cefoperazone treated mice. Body weight was measured daily starting from Day 0 or the day of infection. Animals were challenged with C. difficile strains (A) VPI 10463 (2 × 105 CFU closed circles and 4 × 104 CFU open circles) (B) BI1 (6 × 104 CFU closed squares and 8 × 103 CFU open squares) (C) 630 (2 × 105 CFU closed triangles and 8 × 104 CFU open triangles) and (D) F200 (4 × 105 CFU closed diamonds and 5 × 103 CFU open diamonds). Black lines represent mean percentage of the baseline weight for animals in each group.