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Schematic representation of recombinant plasmid pBS1, which encodes the CME-2 β-lactamase from C. meningosepticum PINT. The thin line represents the cloned insert from C. meningosepticum PINT containing the CME-2 β-lactamase gene, with the arrow indicating its translational orientation (thick line), and the dotted lines indicate the vector pBK-CMV. The three internal probes (probes S1, S2, and S3) used for hybridization experiments are also represented by double-headed arrows.
