Fig. 3

Results of MAST-Carba plus in detection of carbapenemase-producing isolates. A Shows a zone of inhibition of ≥ 5 mm around disc B compared to that of disc A indicating MβL activity, while discs C and D show no zones of inhibition differences compared to that of disc A indicating absence of KPC and AmpC activities and disc E shows a zone of inhibition of > 10 mm indicating absence of OXA-48 activity. B Shows a zone of inhibition of ≥ 5 mm around disc B compared to that of disc A indicating MβL activity, and disc E shows a zone of inhibition ≤ 10 mm indicating OXA-48 activity, while discs C and D show no zones of inhibition differences compared to that of disc A indicating absence of KPC and AmpC activities. C Shows a zone of inhibition of ≥ 5 mm around disc B compared to that of disc A indicating MβL activity, disc C shows a reduction of growth around the disc which considered to be indicative for KPC activity while disc D shows no zone of inhibition differences compared to that of disc A indicating absence of AmpC activity, and disc E shows a zone of inhibition > 10 mm indicating absence of OXA-48 activity. D Shows a zone of inhibition of ≤ 10 mm around disc E indicating OXA-48 activity, while discs B, C and D show no differences in zones of inhibition compared to that of disc A indicating absence of MβL, KPC and AmpC activities