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(a) In vitro release profiles of epidermal growth factor (EGF) solution, EGF-PM, and EGF-coacervate (EGF-Coa) at 32 °C determined by HPLC. The statistical difference was determined by one-way ANOVA with GraphPad Prism software (version 5.01). (b) Comparison of microscopic images of low molecular weight gelatin type A and sodium alginate (LWGA-SA) (1:0.4) coacervates before freeze drying and after rehydration of freeze-dried coacervates after one hour rehydration (Scale bar = 500 μm).
