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. 2021 Apr 20;6(11):4053–4064. doi: 10.1016/j.bioactmat.2021.04.014

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© 2021 The Authors

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Fig. 2 — (A) TEM images of SiO₂ nanoparticles. (B) Nitrogen adsorption-desorption isotherm of SiO₂ nanoparticles. (C) TEM images of HA-SiO₂ nanoparticles. (D) XRD pattern of HA-SiO₂ nanoparticles. (E) Elemental mapping of HA-SiO₂ nanoparticles. (F) SEM images of PLLA NFs fabricated by microfluidic technology. (G) TEM image of BP nanosheets. (H) The size distribution of prepared BP nanosheets. (I) SEM images of porous 3D BP@HA NFs (insert: an enlarged high-definition picture of nanofibers). (J) TEM image of 3D BP@HA NFs. (K) Elemental mapping of nanofiber in 3D BP@HA NFs.