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Morphology characterization. (A) Photograph shows a 1,25(OH)2D3/VID400-loaded PCL nanofiber membrane with a diameter of 6 mm. (B-D) SEM images of (B) PCL/pluronic F127 nanofibers, (C) 1,25(OH)2D3-loaded PCL/pluronic F127 nanofibers, and (D) 1,25(OH)2D3/VID400-loaded PCL/pluronic F127 nanofibers.
