Table 2.

Shannon diversity index and measurement of Evenness of the fecal microflora prior to and after challenge with C. rodentium (CR, in wild type (WT) and MMP-9 gene knockout mice

Experimental group	Shannon-seiner diversity	Evenness
Sham WT	1.88 ± 0.10	0.81 ± 0.02
CR WT 10d	1.32 ± 0.14*	0.65 ± 0.06*
CR WT 30d	1.67 ± 0.08	0.80 ± 0.02
Sham MMP-9−/−	1.59 ± 0.05	0.81 ± 0.01
CR MMP-9−/− 10d	1.83 ± 0.10	0.87 ± 0.03 Ψ
CR MMP-9−/− 30d	1.70 ± 0.09	0.91 ± 0.01 Ψ

N = 3-8 in each experimental group

* p < 0.05 vs WT uninfected and WT 30 days PI

Ψ p < 0.05 vs MMP-9^−/− uninfected