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Observation and comparison of lung tissue in two groups of rats.
| Groups | Control | Model |
|---|---|---|
| Tracheal structure | Normal | Abnormal |
| Epithelial cell morphology | Arranged in line | Injured |
| Cilia status | No lodging and deletion | With lodging and deletion |
| Capillaries | No hyperemia and ischemia | Hyperemia and ischemia |
| Alveolar | No exudate | With exudate |
| Other | No inflammatory cell infiltration | Accompanied by inflammatory cell infiltration |
