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Table 2 Scoring system used by Klein et al

From: Different approaches for interpretation and reporting of immunohistochemistry analysis results in the bone tissue – a review

A % of IHC + labeled cells B intensity of IHC reaction Final score
0 = 0% 0 = no reaction A + B = range from 0 to 6 [108]
1 = <30% 1 = weak
2 = 30-60% 2 = mild A × B = range from 0 to 9 [109]
3 = >60% 3 = strong