Fig. 1

The planktonic (a) and biofilm (b) states of the co-culture of P. aeruginosa—S. aureus on the A549 cell line. The viability of P. aeruginosa was measured as log₁₀ (CFU/well) in the co-culture with S. aureus. The error bars indicate the standard errors of the means in a representative triplicate time. '. *: p < 0.05, **: p < 0.001, ***: p < 0.0001