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Effects of the urease inhibitors flurofamide and acetohydroxamic acid on resistance of H. pylori 84-183 (72-h fresh sub) to acid in the presence or absence of 5 mM urea. S, saline (pH 7.2); A, acid (pH 2.0); A+U, acid containing 5 mM urea; FF, bacteria preincubated in flurofamide (1 μM) for 30 min and then exposed to acid containing 5 mM urea for 30 min; AHA, bacteria preincubated in acetohydroxamic acid (7 mM) for 30 min then exposed to acid containing 5 mM urea for 30 min.
