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SEM micrographs of electrospun PLGA scaffolds and treated groups: (A) PLGA, (B) PLGA PBS, (C) PLGAH01, (D) PLGAH001, (E) PLGAH01FN, and (F) PLGAH001FN. Scale bar, 50 μm. Asterisk (*) corresponds to hydrolyzed collapsed fibers; black arrows correspond to deposited structures between PLGA fibers. FN, fibronectin; PBS, phosphate buffered saline; PLGA, poly(d,l-lactide-co-glycolide); SEM, scanning electron microscopy.
