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Schematic diagram of the processing technique involved in 3D scaffold fabrication: (a) constructing three dimensional (3D) template from partially hydrolysed polyvinyl alcohol (PVA) filament by using 3D printer; (b) inserting PVA 3D template into mould and pouring PVA/maghemite solution and freezing it; (c) after PVA/maghemite completely solidifies, removing the PVA 3D template by immersing in water; and (d) electrospinning PVA/maghemite solution on the 3D PVA/maghemite construct.
