TABLE 2.

SLO activities in oppA-positive and oppA-negative mutant strains of GAS in various atmospheres

AtmosphereMean ± SEM % of SLO hemolysis ina:
A-20SW552SW553
20% O2, 0.5% CO220.00 ± 1.1b44.4 ± 1.124.2 ± 4.3
20% O2, 5% CO225.20 ± 3.8b43.5 ± 1.425.2 ± 1.3
5% O2, 10% CO210.90 ± 0.5b17.7 ± 1.412.2 ± 1.8
  • a The hemolytic activity of SLO was measured as described in the text. The results are from three experiments. Student's t test was used for statistical analysis.

  • b The P value in a comparison with SW552 was <0.05.