Growth of uropathogenic, diarrheagenic, and fecal-commensal E. coli isolates cultured in human urine. (A) Growth profile for pyelonephritis, fecal-commensal, cystitis, enterohemorrhagic, and enteropathogenic strains during static culture at 37°C in sterilized urine pooled from 10 male and female donors. (B) Comparison of growth characteristics of E. coli CFT073 (UPEC) and MG1655 (K-12) in pooled human urine. OD600, optical density at 600 nm.