Fig. 5From: Impact of tissue sampling on accuracy of Ki67 immunohistochemistry evaluation in breast cancerCoefficient of error by tissue area evaluated as a function of Ki67 LI in tumors of different heterogeneity level. CE_Area plotted as depending on heterogeneity level with a separate curve for each HexN = (1,…,15). See Additional file 1 for curve fitsBack to article page