(a) 0 day in DW

(b) 7 day in DW

(c) 0 day in BSA

(d) 7 day in BSA

Figure 1: Pictures (a, c) before and (b, d) after incubation at 3C for 7 days of Dtx-loaded SMES prepared in (a, b) DW and (c, d) BSA with different formulations F1–F3.