(a) Bio-printing system configuration; (b–e) various 3D architectures (sheet, lattice double ring, and tube) developed using Gel-MA; (f–h) grid architecture developed using different concentrations (3, 5, 10 %) of Gel-Ma at 1–8 mm/s stage speed in x and y plane; (i) cell survival study in 3D architecture at different concentrations (3, 5, 10 %) of Gel-; (j) fluorescent images of live-dead cells in Gel-MA samples printed and crosslinked under conditions of differing Gel-MA concentration and UV crosslinking time [64].