Table 2. Organ damage score codes.
Description of lesions and associated damage score (following Bernet et al., 1999) for all organs evaluated. Codes can be found in histological sections, Fig. 3.
| Organ | Code | Description | Score |
|---|---|---|---|
| Eye | N | normal, no vacuoles | 1 |
| vac 1 | 1–4 vacuoles | 2 | |
| vac 2 | 5–10 vacuoles | 3 | |
| vac 3 | >10 vacuoles | 4 | |
| Gills | N | normal | 1 |
| ab | abnormal cell structure | 2 | |
| w | corrugated epithelial surface | 3 | |
| sp, oe, nec | spacing, edema, necrosis | 4 | |
| Gut | N | normal | 1 |
| vac | vacuolization of enterocytes | 2 | |
| epsq | epithelial desquamation | 2 | |
| lip | lipids | 2 | |
| atr | atrophy | 3 | |
| nec | necrosis | 4 | |
| Pancreas | N | normal | 1 |
| stn | change in staining characteristics | 2 | |
| acin | altered acinous structure | 3 | |
| vac | vacuoles | 3 | |
| nec | necrosis | 4 | |
| Kidneys | N | normal | 1 |
| cs | cloudy swelling | 2 | |
| exp | expansion of space inside Bowman’s capsule | 3 | |
| contr | contraction of glomerulus | 3 | |
| nec | necrosis | 4 | |
| Liver damage | N | normal | 1 |
| vac | vacuolization | 2 | |
| atr | atrophy | 3 | |
| nec | necrosis | 4 | |
| Liver lipids | nl | no lipids | 1 |
| lip 1 | <25% lipid vacuoles | 1 | |
| lip 2 | 25–75% lipid vacuoles | 2 | |
| lip 3 | >75% lipid vacuoles | 3 |