Fig. 6: Gradient biocompatibility analysis and 3D printing investigation.
From: Hybrid diacrylate resin-gelatin methacryloyl composite with bone-to-brain stiffness range
a Cell viability analysis on Day 1 after culture (Scale bars present 200 microns) and, b cell morphology at different locations of the gradient sample from soft to hard, illustrated on Day 6 using DAPI/Phalloidin staining analysis (Scale bars present 100 microns). 3D printability of the resin/GelMA composite: c a 3D-printed sample using direct ink writing (resin with black pigments is used for better visibility) has been twisted between two tweezers, d variation in viscosity, and e shear stress with strain rate for resin/GelMA composite with different mixture ratios before cure.
