Fig. 2From: Potential Osteoinductive Effects of Hydroxyapatite Nanoparticles on Mesenchymal Stem Cells by Endothelial Cell InteractionCharacterization of HAPs. TEM micrographs of a np20 and b np80, and SEM micrograph of c m-HAP. d Characterization of HAPs (n = 6). Abbreviations: TEM transmission electron microscopy, SEM scanning electron microscopy, HA hydroxyapatite, m-HAP micro-sized HAP particlesBack to article page