Figure 4. Severe hyperoxia increases liver expression of MMP-9.

Western blotting analysis of MMP-9 expression in neonatal rat livers exposed to moderate and severe hyperoxia. a) ambient air; b) 60% hyperoxia; c) 95% hyperoxia. Each membrane has been probed with anti-tubulin antibody to verify loading evenness. Data are the densitometric measurements of protein bands expressed as mean values of Integrated Optical Intensity (IOI) (±SD).