Figure 3
Mouse colonization assay of H. pylori SS1 and an isogenic acxB:cat mutant strain. Data are presented as a scatter plot of colony forming units per gram of stomach as determined by plate counts. Each spot represents the cfu count from one mouse, expressed as the value of log10 (cfu/g stomach) in the Y-axis. The base line [log10 (cfu/g stomach) = 2.7] is the detection limit of the assay, which represents the count below 500 cfu/g stomach.