FIG. 2.
Percent survival of strains after 1 h of growth in TSB-YE, pH 2.8. Bars are arranged in order of decreasing survival. Percent survival values that do not differ significantly at the 0.05 level (Tukey tests) are noted with the same letter: A to D for the relatively more acid-resistant strains and W to Z for the relatively more acid-sensitive strains.
