RT Journal Article SR Electronic T1 Uptake of ciprofloxacin by macrophages. JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 442 OP 444 DO 10.1136/jcp.38.4.442 VO 38 IS 4 A1 C S Easmon A1 J P Crane YR 1985 UL http://jcp.bmj.com/content/38/4/442.abstract AB Ciprofloxacin was concentrated within mouse peritoneal macrophages to between two and three times extracellular values. Uptake was rapid, occurred equally well with dead cells, and was not affected by lowering the pH or by prior ingestion of Staphylococcus aureus. Intracellular staphylococci were killed by extracellular concentrations of ciprofloxacin as low as 0.5 mg/l.