In DLP printing, the printed scaffolds are fabricated layer-by-layer by projecting a specific pattern onto a liquid photocrosslinkable material which leads to spatially controlled crosslinking of the polymeric chains (Figure ). The printability and the printing resolution achieved with a given photocrosslinkable prepolymer depend on the crosslinking mechanism, the concentration of the functional groups, the viscosity, crosslinking kinetics, and the polymer content. To test the printability of the HA-X inks by DLP, the following formulation was used: 4.0% w/v HA-X, 0.1% w/v LAP, and for the thiol-ene inks, DTT at a thiol:ene ratio of 1.