Figure 1From: A multiplexed, targeted mass spectrometry assay of the S100 protein family uncovers the isoform-specific expression in thyroid tumoursDetermination of reference proteins using the geNorm algorithm. a) Average expression stability values of candidate reference proteins; b) Determination of the optimal number of reference proteins for normalisation. Pairwise variations Vn/n + 1 are calculated between two sequential normalisation factors and stepwise inclusion of the most stable remaining control protein.Back to article page