Table 9.
Pathological lesions in groups infected with MDR strain 2 weeks after inoculation.
| Organ | Lesion | Score | ||||
|---|---|---|---|---|---|---|
| GR1 | GR3 | GR5 | GR8 | GR11 | ||
| Heart | Edema | +++ | +++ | +++ | + | +++ |
| Hemorrhage | +++ | ++ | +++ | — | +++ | |
| Necrosis | ++ | ++ | + | — | + | |
| Heterophilic infiltration | ++ | +++ | ++ | + | ++ | |
| Pericarditis | + | + | — | — | — | |
|
| ||||||
| Liver | Heterophilic infiltration | ++ | +++ | ++ | + | ++ |
| Congestion of blood vessels and sinusoids | ++ | ++ | +++ | + | +++ | |
| Hepatocytic degeneration | ++ | ++ | ++ | + | ++ | |
| Necrosis | + | ++ | — | — | — | |
|
| ||||||
| Spleen | Lymphocytic depletion | + | + | ++ | + | ++ |
| Vasculitis | + | ++ | +++ | + | +++ | |
| 2ry follicle | + | + | — | — | + | |
| Necrosis | — | + | — | — | — | |
|
| ||||||
| Proventriculus | Heterophilic infiltration | +++ | +++ | +++ | ++ | +++ |
| Mucosal degeneration | +++ | +++ | ++ | + | ++ | |
| Necrosis | ++ | ++ | ++ | — | ++ | |
|
| ||||||
| Cecum | Thickening wall | +++ | ++ | ++ | + | ++ |
| Heterophilic infiltration | +++ | +++ | +++ | ++ | +++ | |
| Necrosis | ++ | — | + | — | + | |
(+ = mild, ++ = moderate, +++ = severe).