Fig. 2: Biofilm formation of S.

aureus and P. fluorescens. a Biofilm biomass; b Cell numbers. c Cell Activity Assay. d Raman spectra. e Polysaccharide content in extracellular polymers. f Protein content in extracellular polymers (SA stands for S. aureus biofilm group, PF stands for P. fluorescens biofilm group, and SP stands for biofilm formed by co-culture, SP-F stands for Cell number of P. fluorescens in co-cultured biofilms). Note: different letters (a, b, c, d, e, f) indicate significant differences over time (p < 0.05), different letters (a, b, c, d) indicate significant differences in the treatment groups (p < 0.05).