Strain Groupings Used to Identify Differentially Expressed Genes
| Iddlocus/loci influencing expression level | Treatment group | Control group |
| Idd3 | Idd3, Idd3+5 | NOD, Idd5, Idd9 |
| Idd5 | Idd5, Idd3+5 | NOD, Idd3, Idd9 |
| Idd3+5 | Idd3+5 | NOD, Idd3, Idd5, Idd9 |
| Idd9 | Idd9 | NOD, Idd3, Idd5, Idd3+5 |
| Idd3, Idd5, Idd3+5, and Idd9 | Idd3, Idd5, Idd3+5, Idd9 | NOD |
| other | B10 | NOD, Idd3, Idd5, Idd3+5, Idd9 |
[i] For each comparison, the treatment group was defined as comprising those NOD-derived congenic strains carrying the C57BL/6, or B10 resistance allele at the locus of interest. Conversely, the control group consisted of those NOD-derived strains carrying the NOD susceptibility allele at the locus in question.