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. 2014 Sep 2;37(1):67–73. doi: 10.1007/s10529-014-1652-9

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© The Author(s) 2014, corrected publication 2021

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Fig. 3 — Ranking and determination of optimal number of reference genes using geNorm. a Expression stability measure (M) of the eight reference genes analyzed. Ranking of the genes according to their expression stability is indicated on the x-axis; low M values indicate high expression stability. b Optimal number of reference genes for normalization based on their V values. The V value defines the pair-wise variation between two sequential normalization factors calculated by geNorm