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. 1999 Aug;43(8):1988–1992. doi: 10.1128/aac.43.8.1988

TABLE 2.

Sizes of inhibitory zones produced by enrofloxacin and ciprofloxacin administered alone or in combination

Antimicrobial(s) Concn (μg/ml) Observed (predicteda) size of inhibitory zone (mm)
Enrofloxacin 0.5 18.71
0.25 13.70
0.125 10.97
Ciprofloxacin 0.5 18.82
0.25 14.89
0.125 13.25
Enrofloxacin + ciprofloxacin 0.25 (each) 18.53 (18.77)
0.125 (each) 14.83 (14.30)
0.065 (each) 12.27 (12.11)
a

Predicted from the means of results from the individual administrations combined.