Research Article
The Effectiveness of Anti-R. equi Hyperimmune Plasma against R. equi Challenge in Thoroughbred Arabian Foals of Mares Vaccinated with R. equi Vaccine
Table 1
Macroscopic lesions scores in lungs and organs after necropsy.
| Postmortem Lesion Scores | Organs | No lesion (0) | Mild (1) | Moderate (2) | Severe (3) | Very severe (4) |
| Lung | Without lesions | With 2 to 3 small pyogranulomas or large abscess formation limited to only one lobe of the lung and focal consolidation | With four to five pyogranulomas limited to two lobes of the lung multifocal consolidation and large abscess formation | With a large number of differently sized pyogranulomas limited to three lobes or between the right and left lobes of the lung | With military or differently sized pyogranulomas spread over all lobes of the lung |
| Lymph  node | Without lesions | With slight growth | With mild growth | Overgrown and with limited pus foci of the cross-sectional surface | Overgrown and purulent |
| Heart | Without lesions | With slight paleness | With a wide area of paleness in the epicardium and endocardium or pyogranuloma | With a wide area of paleness in the cross-sectional area or a few pyogranulomas | With a wide area of paleness in the cross-sectional area or several pyogranulomas |
| Liver | Without lesions | Slightly enlarged and congested | Enlarged and mottled appearance or with pyogranuloma | With numerous pyogranulomas in the cross-sectional area and under the capsule | With pyogranulomas spread over the entire surface and the cross-sectional area |
| Kidney | Without lesions | Slightly enlarged | Enlarged kidneys and mottled appearance | Enlarged kidneys and with pyogranuloma in the cross-sectional area and infarction area | Enlarged kidneys and with numerous pyogranulomas in the cross-sectional area and infarction area |
| Spleen | Without lesions | Slightly enlarged | Overgrown and with pyogranuloma in the cross-sectional area | Overgrown and with a few pyogranulomas in the cross-sectional area | Overgrown and with numerous pyogranulomas in the cross-sectional area |
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