Table 4.

Numbers of Nfkb1 interacting genes discovered by the two normalization methods.

Normalization method	DE genes	Interacting	Directly interacting
Array-level only	2	0	0
Strip-level only	99	6	6
Both	111	9	7
Neither	19988	335	221
Total	20200	350	234

The rows give respectively genes found by array-level normalization only, strip-level normalization only, both or neither. The second column gives the numbers of genes differentially expressed between Nfkb1^-/- and wild-type at 180 mins found by different normalization methods. The third column gives the numbers of genes interacting with Nfkb1 in each set (row) of DE genes in the second columns. This interaction could be direct or indirect according to IPA. The fourth columns shows the corresponding numbers of directly interacting genes.