ITGAM and infection: Results showed that, at 18 hours after infection, the ratios of sTLR9+CD11b+ PMNs were increased to 57%, 51%, and 70% of the CD11b+ PMNs in the mice infected with 0.8, 1.6, and 2.4 × 108 CFUs of E. coli, respectively (P < 0.05), compared to 12% in the mice that received saline control (control mice).