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. 2019 Jul 5;27(2):676–694. doi: 10.1038/s41418-019-0379-5

Table 2.

IHC scoring

Percentage score (PS) Observation Intensity score (IS) Observation
1 0–5% 0 None
2 6–25% 1 White brown
3 26–50% 2 Brown
4 51–75% 3 Dark brown
5 76–100%