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H. pyloriand isogenic mutants were used to inoculate five eight-week old C57BL/6 J mice. 2 weeks after challenge colonisation levels in stomachs were measured based on colony forming unit (CFU). Data is presented as a scatter plot with each point representing the CFU count of one mouse stomach, and the solid line the geometric mean for each group. Clean deletion mutants (filled symbols); homopolymeric repeat mutants (open symbols).
