Microbial Counts (log CFU/Filter) 0 Gy 10 Gy Set 1 7.29 ± 0.51 7.31 ± 0.74 Set 2 5.88 ± 1.55 5.77 ± 1.08

Table 1: Microbial enumeration of the apical compartment after 24 h of co-culture with TR146 cells in irradiated (10 Gy) or non-irradiated (0 Gy) conditions (mean ± SD).