Figure 4. Correlation between level of hemolytic activity and severity of lethality.
A) Lethality analysis as described in the legend of Fig. 1 was performed in glp-4(bn2) worms that were fed indicated bacterial strains (Table 1). O1 El Tor strains A1552, E7946 and N16961 induce higher lethality than O1 Classical strains 569B and VC395 with a statistical significance of p<0.01 according to logrank test. Curve comparisons within the classical (pā=ā0.5389) and El tor (pā=ā0.7224) strains were not statistically significant. B) Hemolytic activity of indicated bacterial strains was determined by the CAMP test (Methods).