Table 5.
Histopathological grading table of pharyngeal tissue of rats in each group.
| Group | Dose | Pharyngeal histopathologic classification |
|||
|---|---|---|---|---|---|
| − | + | ++ | +++ | ||
| Blank group | – | 12 | 0 | 0 | 0 |
| Model group | – | 0 | 0 | 0 | 12 |
| Yinhuang group | 10 ml/kg | 2 | 8 | 2 | 0 |
| Compound lobelia | 30 g/kg | 2 | 9 | 1 | 0 |
| 15 g/kg | 1 | 8 | 3 | 0 | |
| 7.5 g/kg | 0 | 8 | 4 | 0 | |
“−” means that the mucosa of pharynx and submucosa are normal; “+” indicates that the scaly epithelium of pharynx has little hyperplasia and a small amount of inflammatory cells infiltrate under the mucosa. “++” means scaly epithelium hyperplasia of pharynx mucosa, and inflammatory cell infiltration is seen in the lower layer. “+++” means the pharynx mucosa scaly epithelium hyperplasia, a large number of inflammatory cells infiltrated under the mucosa.