Fig. 7. Total glutathione concentrations (A ) and the ratio of reduced to oxidized glutathione (GSH/GSSG) (B ) in lung tissues of mice after high tidal volume (HVT) ventilation in the presence and absence of inhaled hydrogen sulfide (H2S) (n = 6 for each concentration) or after intravascular administration of sodium sulfide (Na2S) or vehicle (n = 8 in each group) and in control mice not subjected to HVTventilation (n = 4).