Fig. 3

EDS analysis for different elements. The baseline samples were presented in claret colour, the eukaryotic environment was presented in green, and the control samples in blue. The analysis of baseline vs samples was based on the One-way ANOVA. The differences between groups K18h vs 18 h and RPMI vs RPMI + TNF-α were analysed by paired t-test. a Carbon contents in bacteria placed in various environments. Significance for strain CCDM 219 versus baseline: a **, b*; K18h vs 18 h: d ***. Significance for strain CCDM 368 versus baseline: c*. b Nitrogen contents in bacteria placed in various environments. Significance for strain CCDM 219 versus baseline: a ***, b ****, c*; K18h vs 18 h: e ****. Significance for strain CCDM 368 versus baseline: d ****, RPMI vs RPMI + TNF-α: f *. c Oxygen contents in bacteria placed in various environments. Significance for strain CCDM 219 versus baseline: a ***, b **, c*, d****; K18h vs 18 h: f ****; RPMI vs RPMI + TNF-α: g*. Significance for strain CCDM 368 versus baseline: e ***, K18h vs 18 h: h *