Time course of E. coli bladder infections in inbred mouse strains. Mice were inoculated intravesically with 108 E. coli CFU on day 0 and sacrificed at day 1, 3, 7, or 14. Each point represents the mean number of E. coli CFU in bladders from 5 or 6 mice. ○, AKR; ⊡, BALB/c; •, C3H/HeJ; ◊, C3H/HeN; ▪, C3H/OuJ; □, C57BL/6; ▴, DBA.1; ▵, DBA.2; ×, SJL; +, SWR.