Fig. 10From: Cloning and expression of BpMYC4 and BpbHLH9 genes and the role of BpbHLH9 in triterpenoid synthesis in birchRelative expressions of key enzymes genes (HMGR, FPS, SS, SE, BPY, BPW) related to triterpene synthesis in transgenic birch seedlings. The y-axis values represent multipliers relative to the control. Reported values are the means of three replicates, and standard errors are indicated as vertical lines on the tops of the bars. * Indicates a significant difference between the control and experimental treatments (PÂ <Â 0.05). ** Indicates a highly significant difference between the control and experimental treatments (PÂ <Â 0.01)Back to article page