Table 2 Evaluation criteria of MDR1/P-gp expression using the immunoreactive score [17]
Percentage of positive cells | Points | Intensity of reaction | Points |
|---|---|---|---|
No positive cells | 0 | No reaction | 0 |
<10% | 1 | Weak reaction | 1 |
10–50% | 2 | Moderate reaction | 2 |
51–80% | 3 | Intense reaction | 3 |
>80% | 4 |