Fig. 3From: Dual delivery of bone morphogenetic protein-2 and basic fibroblast growth factor from nanohydroxyapatite/collagen for bone tissue engineeringCell morphology of BMSCs, examined under a light-inverted microscope (magnification ×100). a 1 day after primary BMSCs were cultured. b 5 days after primary BMSCs were cultured. c 1 day after passage 1 BMSCs were cultured. d 5 days after passage 1 BMSCs were culturedBack to article page