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Representative image of the Zones of Inhibition (ZOI) observed with (A,B) S. epidermidis ATCC 35984 and(C,D) S. aureus NCTC 13143 EMRSA-16 at day 20 of rifampicin and vancomycin in combination, showing no evidence of resistant colonies (B,D) and rifampicin alone (A,C) showing potential resistant mutant colonies growing within the ZOI (black arrows).
