Figure 1From: Analysis of gene expression changes in relation to toxicity and tumorigenesis in the livers of Big Blue transgenic rats fed comfrey (Symphytum officinale)Mean body weight of Big Blue rats fed with 8% comfrey root for 12 weeks. The data represent the means ± SD of 6 rats from the control (■) and the 8% comfrey root (●) groups.Back to article page