NormFinder ranking of candidate reference gene expression stability.

<p>Expression stability values computed by NormFinder <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0070998#pone.0070998-Schnepf1" target="_blank">[11]</a> are shown. Low stability values indicate stable gene expression. Genes are listed top to bottom in the order of decreasing expression stability.