Table 1.

CLSM-based characteristics of P. aeruginosa ATCC27853 and mutant biofilm structure in the mature II phase (phase IV, 96 h).

Strains	Substrate coverage (%)	Average thickness (μm)	Maximum thickness (μm)	Exopolysaccharide (μg/10∧9CFU)
Wild type	72.34 ± 2.12	6.98 ± 0.71	37.56 ± 3.54	32.45 ± 1.45
ΔoprD	65.36 ± 2.83	5.89 ± 0.50	24.12 ± 1.41*	30.47 ± 7.16
ΔompA	34.79 ± 7.07*	3.28 ± 0.35*	19.54 ± 3.53*	14.67 ± 2.14*
ΔcbpD	45.87 ± 1.41*	4.31 ± 0.71*	14.56 ± 0.72*	12.39 ± 0.85*

^“*” Indicates a significant change compared with the wild type strain.