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Ultrastructural analysis of MDR A. baumannii that attached to the cell surface of A549 cells under FE-SEM. (a,d) A549 cells incubated with only MDR A. baumannii. (b,e) A549 cells were treated with phage vABWU7 and then infected with MDR A. baumannii as a prophylactic application. (c,f) A549 cells were infected with MDR A. baumannii and then treated with phage vABWU7 as a therapeutic application. The cells were observed at magnifications of ×1000 and ×20,000.
