Fig. 9From: Cloning and expression of BpMYC4 and BpbHLH9 genes and the role of BpbHLH9 in triterpenoid synthesis in birchTotal triterpenoid contents in the cells of the control and transgenic yeasts. The reported values are the means of three replicates, and the vertical line on top of each bar indicates standard error. The letters in Fig. 9 indicate a significant difference at the 0.05 levelBack to article page