Figure 4.

O2 and CO2 changes in the group of rats that received a sublethal dose of CN for 4 min (KCN infusion 0.75 mg/kg/min). Half of the animals received MB (open blue circles) or saline (black circles) 5 min into recovery. Note that MB increased O2 and CO2 by 2-fold (see text for further details and discussion).