Table 2. Flow Behavior of Each Ink Formulation: Viscosity, Shear-Thinning Coefficients, Yield Stress, and Recovery Rate during the Extrusion.

compositions	n	viscosity [Pa·s]	K	τ0 [Pa]	recovery rate [%]
GelMA30	0.82	1.22	0.01	0.04
GelMA60	0.41	4.62	0.73	0.07
GelMA30GA	0.28	4.05	0.43	0.08
GelMA60GA	0.92	0.05	0.01	0.02
GelMA30GA-2.5Fe	0.42	76	0.80	0.74
GelMA60GA-2.5Fe	0.26	4.16	0.16	0.04
GelMA30GA-5Fe	0.03	7940	276	83	∼73
GelMA60GA-5Fe	0.23	6371	21	21	∼72