Bacterial strains and culture conditionThe bacterial strains (Microbiologics, Inc., St. Cloud, Minnesota, USA) used were Escherichia coli ATCCⓇ 25,922™, Proteus mirabilis ATCCⓇ 25,933™, Staphylococcus aureus subspecies aureus ATCCⓇ 25,923™, Staphylococcus epidermidis ATCCⓇ 12,228™ and Enterococcus faecalis ATCCⓇ 29,212™.
About 50µL of bacterial frozen stocks samples (108 CFU/ml) were inoculated in BHI (brain heart infusion) and incubated at 37 °C for 24 h.