Figure 4: Photographs of NADPH diaphorase histochemistry in the endotoxin-only injection (E-sham, and E4) and in the ICS or LABA inhalation plus endotoxin injection groups (EL-sham, ICSE4, and LABAE4). In the cross-sectional views, diaphragm muscle fibers were stained more strongly at E4 than in the E-sham. However, there was no strong staining in EL-sham, ICSE4, and LABAE4. All scale bars indicate 50 μm. -25- -26-