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Pathology score standard of lung tissue.
| score | A Infiltrative around bronchioles and bronchi | B Exudation in bronchioles and bronchi | C Infiltration around blood vessel | D Edema | E Atelectasis |
|---|---|---|---|---|---|
| 0 | None | None | None | None | None |
| 1 | <25% | <25% | <10% | Few | <25% |
| 2 | 25-50% | 25-50% | 10%-50% | Slightly | 25-50% |
| 3 | 50-75% | 50-75% | 50-75% | Severely | 50-75% |
| 4 | >75% | >75% | >75% | Completely | >75% |
Score = A+B + C+D + E.
