Table 1: Summary of altered gene expression in mice infected with WT Y. pestis CO92, or its lpp mutant, compared to uninfected control animals.
Tissue
Control versus WT
WT versus Mutant
12 hours
48 hours
12 hours
48 hours
Up
Down
Up
Down
Up
Down
Up
Down
Number of Genes
Liver
33
39
966
441
5
6
120
136
Lung
37
10
162
30
—
—
109
—
Spleen
44
4
77
1
9
16
—
—
A dash (“—") indicates that no gene expression differences were deemed as statistically significant (fold-change 1.5, value ). Note that 57% (109 out of 192) of WT Y. pestis-induced host transcriptional responses in the lungs of mice infected for 48 hours were perturbed in the absence of lpp.