The rifampicin resistant strains of E. coli O157:H7 were used to differentiate the numerous background bacteria from the fresh sample and there was no significant difference of pressure effect found between normal and rifampicin resist strains.
The rifampicin resistant strains of E. coli O157:H7 wereused to differentiate the numerous background bacteria from thefresh sample and there was no significant difference of pressureeffect found between normal and rifampicin resist strains.