Figure 9.

Proportion of pulmonary alveolar macrophages with engulfed apoptotic neutrophils in BALF macrophages of rats after intratracheal instillation of silica or saline and intraperitoneal injection of saline or ω-nitro-L-arginine methyl ester (L-NAME) (mean + se). * There is a statistically significant difference in comparison with control groups.