Fig. 6. Pulmonary messenger RNA (mRNA) concentrations of CXCL-2 (A ), CD11b (B ), and L-selectin (C ) in mice subjected to high tidal volume (HVT) ventilation in the presence and absence of hydrogen sulfide (H2S) (n = 6 for each concentration) or after intravascular administration of sodium sulfide (Na2S) or vehicle (n = 8 in each group). mRNA concentrations are expressed as fold change relative to the average expression values in control mice not subjected to HVTventilation (n = 4).