Figure 1.

Neutrophil emigration into airspaces of lungs. Neutrophil migration had initiated by 4 h after instillation of either E. coli or S. pneumoniae. Neutrophils in bronchoalveolar lavage (BAL) fluid were similar in number at all time points except 10 h after instillation, when the recruitment induced by E. coli was greater than that induced by S. pneumoniae. Neutrophil migration increased 8- to 15-fold between 4 and 10 h. n = 5 at each time point except 10 h, where n = 2. *Significant difference between E. coli and S. pneumoniae, p < 0.05.