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SEM images of S. aureus BA01611 cells. (A) Untreated S. aureus BA01611 (control); (B) S. aureus BA01611 treated with colistin; (C) S. aureus BA01611 treated with bacitracin; (D) S. aureus BA01611 treated with both colistin and bacitracin. Arrows indicated partially damaged surface; (E) high magnification of S. aureus BA01611 treated with both colistin and bacitracin. The cell surface was damaged in multiple locations.
