Fig. 2
From: Shape-memory collagen scaffold combined with hyaluronic acid for repairing intervertebral disc
Shape-recovering properties of the fabricated structures. A Cyclic compressive tests (strain = 90%, 10 times) and (B) optical images of initial, compressed (strain = 90%), and released states. C Stress–strain curves and (D) compressive moduli of shape-memory structures (SMSs). Mean ± SD (n = 3), one-way ANOVA. *p < 0.05, **p < 0.01, and.***p < 0.001