Figure 2.

Cell types present in the bronchoalveolar lavage (BAL) fluid of DBA/2 mice following infection with the three different M. tb strains. At the time points indicated BAL fluid of each mouse was collected, counted and a sample taken for cell type determination by cytospin analysis. 100 cells were counted and differential sorting of cell types was performed blindly in triplicate. Results are expressed as the mean number of total cells harvested per mouse ± standard deviation from 5 mice per group per time points. (* = p < 0.05).