Fig. 3.

Scaffolds fabricated from porous PLGA microspheres. (A) Photographic image and (B, C) SEM micrographs of a scaffold prepared with microspheres treated for 2 min with EtOH–NaOH. (D) Scaffold prepared with microspheres treated for 0 min with EtOH–NaOH (non-treated). (E) Scaffold prepared with microspheres treated for 3.5 min with EtOH–NaOH (non-treated). (F) Scaffold prepared with microspheres treated for 5 min with EtOH–NaOH (non-treated). All scaffolds were fabricated at 37 °C for 24 h and sliced into three sections to reveal the interior of the scaffold. Size bars represent (A) 2 mm, (B) 50 μm, (C) 20 μm, (D–F) 50 μm.