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Alpha-toxin produced by clinical MRSA strains after growth with or without methicillin
| Strain | Ratioa |
|---|---|
| MA20 | 6.2 |
| W570 | 21.5 |
| W605 | 12.0 |
| W654 | 4.4 |
| W655 | 4.0 |
| W704 | 18.4 |
| W724 | 2.5 |
| W810 | 9.1 |
| W903 | 2.4 |
The strains were cultivated either with 10 μg of methicillin per ml or without methicillin. Alpha-toxin levels were determined by immunoblotting and were quantified by densitometry. The ratio shows alpha-toxin produced in the presence of methicillin to that produced in the absence of methicillin.
