FIG. 3.
Histological evaluation. The cumulative inflammation score (A and C) and the percentage of lung inflammation (B and D) were determined for BALB/c (A and B) and C57BL/6 (C and D) mice 6 weeks after challenge. Bars represent means. ****, P < 0.0001; ***, P < 0.0005; **, P < 0.005; *, P < 0.05.