FIG. 1.
SOD activity of whole-cell sonicates of A. pleuropneumoniae strains 4074 (wild type, lane 1) and SK564 (sodC::Kan, lane 2). Each lane contained approximately 40 μg of total protein. [Cu,Zn]-SOD activity in the wild-type extract is indicated by the arrow. The more diffuse Mn-SOD activity, present in both lanes, is indicated by the dashed line.