Figure 3

Acid resistance of L. reuteri 100-23 (black symbols) and L. reuteri ΔgadB (open symbols) in phosphate buffer (pH 2.5) (●, ○), in phosphate buffer with 10 mM glutamate (▲, ∆), or in phosphate buffer with 10 mM arginine (■, □). Cell counts are plotted as log (N/N₀). Data are representative of three independent experiments and the standard deviations were generally less than 0.3.