Fig. 3From: Design, synthesis, and biological evaluation of the novel glycyrrhetinic acid-cinnamoyl hybrids as anti-tumor agentsMorphological changes observation of Hela cells by H33342 staining (×200): a control group without 8a; b 5 μM of 8a; c 10 μM of 8a; d 20 μM of 8a. The cell morphology was observed and photographed under inverted phase-contrast microscope after H33342 stainingBack to article page