Fig. 3From: Evaluation of reference genes for RT-qPCR study in abalone Haliotis discus hannai during heavy metal overload stressPairwise variation (V n /V n + 1) analysis to determine the minimum number of reference genes for accurate normalization in the gill subset or hepatopancreas subset, based on geNorm software. For each subset, the largest and smallest V values are indicated in the parentheses Back to article page