Table 3.

Alpha-toxin produced by clinical MRSA strains after growth with or without methicillin

Strain Ratioa
MA206.2
W57021.5
W60512.0
W6544.4
W6554.0
W70418.4
W7242.5
W8109.1
W9032.4
  • a 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.