Table 2.

Thicknesses of zones of APase expression under different gaseous conditions

AtmosphereMean biofilm thickness ± SD (μm)Mean APase band thickness ± SD (μm)
Ambient air117.13 ± 11.5429.89 ± 4.39
N2 142.04 ± 19.141.82 ± 3.11
O2 150.59 ± 30.6146.43 ± 5.72