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Figure 2 Pressure-volume relations, left ventricular (LV) pressure, and slope of derivative of change in systolic pressure over time (dP/dt) curves in control versus infected groups. A, C, E = pressure-volume relations. Light continuous curves are data from the uninfected control group. Continuous curves are data from the infected group. Dotted lines indicate end-systolic and end-diastolic pressure volume relationships. B, D, F = LV pressure and dP/dt curves. A, B = day 1; C, D = day 7; E, F = day 14.