FIG. 3.

(A–D) Fluorescence microscopy images of 3D printed nerve guidance scaffolds. (A) is a hyaluronic acid scaffold conjugated with laminin, and (B) shows the Schwann cells (green) that attached and grew well on the scaffold after 24 h of culture. Top views of (C) a 3D branched scaffold and (D) a multilumen nerve guidance scaffold. The images are from Suri et al.⁷⁵ (E–H) are a 3D printed aligned PEG-DA neural construct sheet with highly conductive graphene nanoplatelets: (E) is a representative computer-aided design (CAD) model of an aligned neural construct sheet; (F) photo images of a 3D printed neural construct without (left) and with graphene nanoplatelets (right); (G, H) scanning electron microscopy images of the 3D printed scaffold with grapheme nanoplatelets at low and high magnifications. Color images available online at www.liebertpub.com/teb