evaluation of the interaction of antibiotics, bacteria, and host defenses to help identify those
factors that influence therapy for bacterial infections. This study evaluates the effect of sub-
inhibitory concentrations (sub-MICs) of ceftriaxone, ciprofloxacin and gentamicin on killing of
Escherichia coli ATCC 25922 by human serum. Saline-washed 18-h Mueller-Hinton broth
culture of test strain was inoculated into 50% human serum-Hanks’ Balanced Salt …