Assessment of activity of LL-37 (16 mM) in combination with various antibiotics against Salmonella. Shown are results of CFU counts of a Salmonella enterica CSF isolate (A, B, C, and D) or blood isolate (E, F, and G) in the presence of 1/2 MIC of LL-37 and 1/2 MIC of antibiotic after 6 h. The starting inoculum is shown by the horizontal line. CIP, ciprofloxacin; CRO, ceftriaxone; CM, chloramphenicol; AZM, azithromycin; Control, medium alone. *, P < 0.05 versus either agent alone.