Despite a slight trend toward decreased fitness from 1 to 2 h postinoculation (hpi), the mutants were not significantly outcompeted by the WT in human urine, confirming that d -serine utilization does not contribute to P. mirabilis growth in human urine ex vivo within this 6-h time frame.
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d-Serine Degradation by Proteus mirabilis Contributes to Fitness during Single-Species and Polymicrobial Catheter-Associated Urinary Tract Infection.
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