Inflammatory response on day 3 (evaluated by the presence of polymorphonuclear leukocytes [PMN]) and number of recovered microorganisms (in log10 CFU/20 μl) from washing fluid. Shaded bars, percent polymorphonuclear cells; open bars, bacterial counts (log10 CFU/20 μl). AMX, amoxicillin; CXM, cefuroxime; 5 and 20, doses of 5 and 20 mg/kg, respectively.