From: Pathogenicity comparison of duck Tembusu virus in different aged Cherry Valley breeding ducks
Groups | 15-week old ducks | 55-week old ducks | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Score | 0 | 1 | 2 | 3 | 4 | 0 | 1 | 2 | 3 | 4 |
Organs | ||||||||||
 Heart* |  | 2/3 a | 1/3 |  |  |  |  | 1/3 | 2/3 |  |
 Liver |  | 3/3 |  |  |  |  | 1/3 | 2/3 |  |  |
 Spleen* |  | 1/3 | 2/3 |  |  |  |  |  |  | 3/3 |
 Kidney |  |  | 3/3 |  |  |  |  |  | 2/3 | 1/3 |
 Brain* |  | 2/3 | 1/3 |  |  |  |  |  | 3/3 |  |
 Ovary* |  | 1/3 | 2/3 |  |  |  |  |  | 1/3 | 2/3 |