Figure 5.

Endotoxin exposure protects pulmonary alveolar cells from hypoxia-induced cell death. Bar chart depicting cell viability as measured by MTT assay of A549 cells expressed as % of normoxia controls. Groups were normoxia and hypoxia controls and cells pretreated with LPS prior to incubation under conditions of hypoxia (n = 5 per group). The figure demonstrates the protective effect of endotoxin exposure against hypoxia-induced cell death. *Significantly different (p < 0.01, Students t test).