Figure 5From: Construction of an adult barnacle (Balanus amphitrite) cDNA library and selection of reference genes for quantitative RT-PCR studiesDetermination of the optimal number of reference genes for data normalization. Bar values indicate the magnitude of the change in the normalization factor after the inclusion of an additional reference gene. The authors of geNorm suggest that V > 0.15 should be considered as the threshold to include an extra RG into the assay.Back to article page