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The agarose gel electrophoresis pattern for amplification products of spa, mecA, and pvl genes using multiplex PCR (Lane 1, 100 bp ladder; Lane 2, negative control; Lane 3, positive control for methicillin-sensitive S. aureus (MSSA) (ATCC 25923); Lane 4, positive control for methicillin-resistant S. aureus (MRSA) (ATCC 33591); Lanes 5–10, Staphylococcus aureus isolates).
