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. 2016 Aug 19;11(8):e0159458. doi: 10.1371/journal.pone.0159458

Fig 4. Pairwise variation (V) analysis among the candidate reference genes.

Fig 4

The relative value Vn/Vn+1 was analyzed by geNorm to determine the optimal number of reference genes required for RT-qPCR data normalization. The relative value at V2/V3 indicated the optimal number of genes for normalization in each experiment design.