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. Author manuscript; available in PMC: 2009 Nov 30.
Published in final edited form as: J Pharm Sci. 2009 Sep;98(9):3278–3289. doi: 10.1002/jps.21846

Figure 2.

Figure 2

Figure 2

Figure 2

Recovery of biological activity after freeze-drying and/or storage. Luciferase expression in COS-7 cells after transfection with lipoplexes that had been freeze-dried and/or stored at indicated temperatures. Each symbol represents the mean ± one standard error of replicate samples (n=4). Fig. 2A indicates samples stored at room temperature; Fig. 2B, 40°C; Fig. 2C, 60°C. No significant difference was observed between each data point after 3-month storage and the corresponding fresh controls. SD@ stands for “secondary dried at”.