Fig. 4From: Preparation of Glycyrrhetinic Acid Liposomes Using Lyophilization Monophase Solution Method: Preformulation, Optimization, and In Vitro EvaluationSurface morphology of TBA/water co-solvent of different TBA volume percentage by optical microscope (× 100 magnification). a 40%. b 50%. c 60%. d 70%. e 80%Back to article page