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. 2014 Dec;10(12):5090–5098. doi: 10.1016/j.actbio.2014.08.015

Fig. 1.

Fig. 1

Fabrication of porous PLGA microspheres. SEM micrographs of PLGA microspheres: (A) non-porous PLGA microspheres fabricated using a double emulsion process without the use of a porogen; (B) porous PLGA microspheres fabricated using a double emulsion process with PBS as a porogen (untreated); (C) porous PLGA microspheres treated for 2 min with EtOH–NaOH; (D) porous PLGA microspheres treated for 3.5 min with EtOH–NaOH; (E) porous PLGA microspheres treated for 5 min with EtOH–NaOH (scale bars represent 100 μm on left and middle images, 5 μm on right images).