Fig. 5

3D printing of the hydrogels. A and C Macroscopic images of 3D printed Alg-Gel grids of different sizes (15 mm × 15 mm and 30 mm × 30 mm). B and D Macroscopic images of 3D printed INHs-0.25 grids of different sizes (15 mm × 15 mm and 30 mm × 30 mm). The grids were printed in 6 wt.% Alg or INHs-0.25 with 0.1 wt.% CaCl₂ concentrations and subsequently soaked in DMEM and PBS to examine the stability