Fig. 2From: An experimental study on providing a scientific evidence for seven-time alcohol-steaming of Rhei Rhizoma when clinically usedEffects of unprocessed or processed Rhei Rhizoma on HepG2 cell viability. Cells were treated with RR-U, RR-P1, RR-P4 and RR-P7 at concentration of 100 μg/mL for 4 h. Cell viability was presented as a percentage of the control. ** p < 0.01 and *** p < 0.001 compared with the control group. ### p < 0.001 compared with RR-U or RR-P1 treated groupBack to article page