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Infection with NU14 results in greater bladder colonization. Female C57BL/6 mice (n = 21) were catheterized and instilled with 1 × 108 CFU of NU14 or MG1655 via transuretheral catheter. After 24 h, the mice were sacrificed, and the bladders were homogenized and plated to determine colonization. The asterisk indicates a statistically significant difference between samples infected with NU14 and samples infected with MG1655 (P = 0.0001).
