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Flowchart and results of the broth-PCR method in this study. a, the broth, when it turned turbid or after a maximal 5-day incubation, was spread to the agar plates and processed in a conventional way. b, one (sample 12) of the MRSA strains was not detected by the direct plating method. c, an MRSA strain was isolated from sample 13 on the MSA plate by the direct plating method.
