Figure 2.

Effect of different antibiotics (A), nature-identical compounds (B), and organic acids (C) on relative expression levels of E. coli K88 virulence genes related to cellular adhesion (faeG), heat-labile toxin (eltA and eltB), heat-stable toxins (estA and estB), motility (motA), quorum sensing (luxS), and biofilm formation (bssS and tnaA). Data are expressed as means (n = 3) and SEM is represented by vertical bars. For each gene, significant differences between each substance and its control are marked by asterisks (p < 0.05).