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. 2006 May;44(5):1744–1754. doi: 10.1128/JCM.44.5.1744-1754.2006

FIG. 12.

FIG. 12.

(A) Combined azithromycin MICs and disk zone diameters recorded with the 50-strain collection by the four laboratories. (B) Azithromycin MICs and disk zone diameters recorded with 100 unique meningococcal isolates contributed individually by the four laboratories. The vertical lines represent the proposed zone diameter breakpoints.