Relative expression levels of virulence genes related to chemotaxis (cheA and cheZ), flagella (fliA and motA), biofilm (bssS and tnaA), the T3SS (sepD and escC), and antibiotic resistance (marA and acrB) in E. coli O157:H7 adapted to sublethal concentrations of thymol (1/2T), carvacrol (1/2 C), or trans-cinnamaldehyde (1/2TC), compared to nonadapted cells (control).