Fig. 5From: Nanodiamond enhanced mechanical and biological properties of extrudable gelatin hydrogel cross-linked with tannic acid and ferrous sulphate(a) 3D printing of Gel/TA/FS gel, and its behaviours: (b) grid like extrusion (approx. spacing 10 mm, thickness 1 mm), (c) extruded lines through hand, (d) cuboid shape gels, (e) 3D bioprinted gel grid, (f) microscopic image of 3D bioprinted grid, (g) swelling in DI waterBack to article page