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Severity of histopathological lesions in chicken BOF.
| Pathological lesions | Control group | MG-infection group |
|---|---|---|
| Inflammatory cell infiltration | 0/15 | 14/15 |
| Fragmented nuclei | 1/15 | 12/15 |
| Necrosis | 0/15 | 13/15 |
| Lymphocytes reduction | 0/15 | 14/15 |
Incidence of histopathological damage of bursa of fabricius in different groups of chickens (n = 15).
