Figure 4.

(A) Changes in particle size of conventional liposomes stored at 4°C at different time intervals over 13 weeks. (B) Size distribution of conventional liposomes stored at 4°C at different time intervals over 13 weeks.

Note: Liposomes were passed through 1-μm PTFE filters. Values denote the mean ± standard deviation of three separate sets of experiments.

Abbreviations: SCF-CO₂, supercritical fluid of carbon dioxide; Film-S100, conventional liposomes prepared using Lipoid S100; Film-E80, conventional liposomes prepared using Lipoid E80; PTFE, polytetrafluoroethylene.