Fig. 2.

H. pylori reversal response to zinc, copper and nickel. All behaviour was measured in BB10 supplemented to the final concentration of metal indicated in the legend. (a) Results with strain mG27m and its isogenic chemotaxis mutants. (b) Results with strain SS1 and its isogenic chemotaxis mutants. Each measurement derives from at least 20 bacteria from two or more independently grown cultures, and is given as the mean per bacterium. *Statistically significant response (P<0.05) using Student’s t test.