Figure 8

Viability of cultures exposed to an aerosol of PBS by using the Vitrocell™ aerosol exposure system. Cultures were exposed to an aerosol of PBS for 30 min using the Vitrocell™ aerosol exposure system. A: A549 monoculture; B: Coculture of A549 and EA.hy 926 cells; C: Tetraculture. The dotted line represents the viability of cells kept under submerged conditions to which the ALI samples were compared. Data represents the mean of four independent transwell inserts ± SEM. Groups that are sharing the same letters are not significantly different (P > 0.05).