Contact angles of <i>P. aeruginosa</i> PA14 strains before and after DNase I treatment using water, formamide and diiodomethane and their surface free energy components: Lifshitz-Van der Waals (γ^LW), acid-base (γ^AB), electron-donating (γ⁻) and electron-accepting (γ<

Error bars represents standard deviations from the mean (n = 3). Asterisks indicate statistically significant (p<0.05) differences in contact angle and surface energy in comparison to DNase I treated wildtype and ΔphzA-G strain regardless of DNase I treatment.