Table 2.
Modified Allred scoring system. The modified Allred Score system was used to analyze immunohistochemical staining of CD31 and alpha-smooth muscle actin (α-SMA) markers, and they were scored based on the Proportion and intensity of staining.
Proportion score (P) | Intensity score (I) | Allred score (P + I) |
---|---|---|
No cells are immunoreactive = 0 | Negative = 0 | Negative = 0-1 |
≤1 % of cells are immunoreactive = 1 | Weak = 1 | Weak = 2-3 |
1–10 % of cells are immunoreactive = 2 | Intermediate = 2 | Moderate = 4-6 |
11–33 % of cells are immunoreactive = 3 | Strong = 3 | Strong = 7-8 |
34–66 % of cells are immunoreactive = 4 | – | – |
67–100 % of cells are immunoreactive = 5 | – | – |