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Figure 2 Hemodynamic parameters measured just before the end of reperfusion. Summarized data on peak left ventricular systolic pressure (LVSP) (A) and maximal positive rate of the first derivative of left ventricular pressure (dP/dt_max) (B) in the sham-operated wild-type mice (solid bars) (n = 5), tumor necrosis factor (TNF)- knockout (KO) mice (light bars) (n = 5), reperfused wild-type (n = 6) and TNF- KO (n = 5) mice. *p < 0.05. I/R = ischemia/reperfusion.