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Scoring scheme for HET-CAM test.
| Effect | Score | Inference |
|---|---|---|
| No visible hemorrhage | 0 | Non irritant |
|
Just visible membrane
Discoloration |
1 | Mild irritant |
| Structures are covered partially due to membrane discoloration or hemorrhage | 2 | Moderately irritant |
| Structures are covered totally due to membrane discoloration or hemorrhage | 3 | Severe irritant |
