ITGAE and influenza: To investigate the reason for the earlier increase in T cells seen in the MLN and the lungs of infected BTE sensitised mice, the number of CD11b+ and CD103+ DCs were analysed in the MLN at day 3 p.i. Mice sensitised with BTE and infected with influenza showed a significant increase in the number of CD11b+ DCs compared to infected PBS treated mice and non-infected BTE sensitised mice (Fig 6A).