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Microstructure by scanning electron microscopy (SEM) (a–c) and elemental analysis by energy dispersive X-ray spectroscopy (EDX) (d–f) of the scaffolds: Poly(l-lactide-co-glycolide) (PLGA) (a,d), Poly(l-lactide-co-glycolide) modified with collagen type I (PLGA/coll) (b,e), and Poly(l-lactide-co-glycolide) modified with hydroxyapatite (PLGA/HAp) (c,f). Insert in PLGA/HAp (c) shows globular cauliflower mineral deposits typical for low-crystalline hydroxyapatite.
