Table 3 Expression of IFITM genes in response to AI infection in chicken and in duck. Numbers refer to fold-change in gene expression
A. CHICKEN | ||||||||
| Â | Low path infection | High path infection | ||||||
| Â | Ileum | Â | Lung | Â | Ileum | Â | Lung | Â |
 Gene | Day 1 | Day 3 | Day 1 | Day 3 | Day 1 | Day 3 | Day 1 | Day 3 |
 IFITM1 |  |  |  |  | ↓2 |  |  |  |
 IFITM2 |  |  |  |  |  |  |  |  |
 IFITM3 |  |  |  |  | ↑2 |  |  |  |
B. DUCK | ||||||||
| Â | Low path infection | High path infection | ||||||
| Â | Ileum | Â | Lung | Â | Ileum | Â | Lung | Â |
 Gene | Day 1 | Day 3 | Day 1 | Day 3 | Day 1 | Day 3 | Day 1 | Day 3 |
 IFITM1 | ↑3 | ↑3 | ↑3 |  | ↑10 | ↑6 | ↑12 | ↑4 |
 IFITM2 | ↑4 |  | ↑3 |  | ↑13 | ↑5 | ↑27 | ↑6 |
 IFITM3 |  |  |  |  |  |  | ↑93 | ↑24 |