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(A–E). Micromorphology of TOB-loaded gelatine microspheres formulated with different amounts of GTA. (A) 0.5 mL GTA; (B) 0.3 mL GTA; (C) 0.15 mL GTA; (D) 0.1 mL GTA; (E) 0.05 mL GTA. (A2–E2) are zoomed in images of (A1–E1). Scale bar, 10 μm. (F) The size of the microspheres formed by 0.3 mL, 0.15 mL, and 0.1 mL GTA. (G) Accumulative TOB release from the microsphere formulated with 0.1 mL GTA.
