Fig. 4. Protein concentrations in bronchoalveolar lavage (BAL) fluid obtained from mice after high tidal volume (HVT) ventilation. BAL fluid protein concentrations were measured subsequent to HVTventilation in the presence and absence of various concentrations 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).