Ranking of the candidate reference genes according to their stability value using geNorm, NormFinder and BestKeeper analyses.

*In the BestKeeper analysis, the genes of TUB, SAMD, ACT and GAPDH were rank-ordered according to their CV [% Ct] and SD [± Ct].

在BestKeeper分析（BestKeeper analysis）中，TUB、SAMD、ACT及GAPDH四种基因依据其变异系数（CV [% Ct]，Coefficient of Variation [% Cycle Threshold]）与标准差（SD [± Ct]，Standard Deviation [± Cycle Threshold]）完成了秩次排序。