Fig. 5From: Micro/Nano Multilayered Scaffolds of PLGA and Collagen by Alternately Electrospinning for Bone Tissue EngineeringX-ray photoelectron spectra of hydroxyapatite nanorods without (a) and with glutamic acid (b), PLGA (c), collagen (d), and mixed fibrous multilayered scaffolds of PLGA and Col-HA (e) Back to article page