Fig. 4From: Design, synthesis, and biological evaluation of the novel glycyrrhetinic acid-cinnamoyl hybrids as anti-tumor agentsApoptosis analysis by FCM using AnnexinV-FITC/PI staining on the Hela cells treated by 8a; a control group without 8a; b 5 μM of 8a; c 10 μM of 8a; d 20 μM of 8a Back to article page