Figure 1: Effect of CSE concentration on BAL cell recovery. BALB/c mice received 50 μl 0, 1, 3, 10, 30 or 100% CSE in PBS by intranasally administration for once daily for 4 days. Mice were sacrificed, the lungs lavaged and cytospins prepared. Total differential cell counts (a) and TNF-α (b) in BAL were measured. Each bar represents the mean ± S.D. for 5 mice. *P<0.05; **P<0.005; ***P<0.001 (all vs 0% CSC). ND = not detectable.