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Morphologies of BAECs (A–C) and BSMCs (D–F) seeded on untreated and plasma-treated PLLA microfibrous scaffolds obtained after incubation in the serum medium for 24 h. (A, D) Untreated, (B, E) Ar plasma-treated, and (C, F) Ar-NH3/H2 plasma-treated scaffold surfaces.
