A) Representative pre-formed hydrogel being wrapped in SIS, grid = 1 cm, B) Representative hydrogel-filled conduit ready for implantation, C) Magnetically templated hydrogel-filled implant sutured in 10 mm-gap injury location, D-G) H&E stained 20 μm thick sections of longitudinally-sliced implants after 2 weeks (D,E) and 4 weeks (F,G) of implantation. Scale = 1 mm.