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. 2017 Apr 12;8:627. doi: 10.3389/fmicb.2017.00627

Figure 7.

Figure 7

Toxicity tests of the 19 B. cereus strains on CaCo-2 cells. (A) Reciprocal titers for 50% lethal doses obtained in WST-1 bioassays are shown. The assay was performed only after 6 h of growth under simulated intestinal conditions. (B) Propidium iodide influx tests were performed after 2, 4, 6, 8, and 10 h of growth. The maximum linear slope of the fluorescence curves of each strain is shown. Strains are grouped according to their enterotoxin gene profiles, which are separated by dotted lines.