Fig. 7From: Lamination of microfibrous PLGA fabric by electrospinning a layer of collagen-hydroxyapatite composite nanofibers for bone tissue engineeringSEM micrographs of collagen nanofibers scaffolds electrospun using collagen solution containing unmodified n-HA (a) 3.8 wt%, (b) 4.4 wt%, (c) 5.0 wt% and (d) scaffolds electrospun using collagen solution containing 4.4 wt% L-glutamic acid grafted nHABack to article page