Figure 4.
Effect of O2 concentrations on vasodilatory effects of septic RBCs. Septic RBCs (0.003 [3%] hematocrit) were added to vessels at either high (900 μM) or low (20 μM) O2 tensions, and changes in vessel tension were measured. RBCs isolated from control animals had no effect on vessel tension at high or low oxygen concentrations. Data represent mean ± SEM (n = 3). *P ≤ .05 versus control. #P ≤ .05 versus LPS RBCs at high O2.