Figure 4.
(a) Effects of calcium concentration on the equilibrium compressive modulus Eeq and the magnitude of dynamic shear modulus |G*| and phase shift angle δ at 1Hz for chondrocyte-embedded alginate hydrogel constructs after incubation for 28 days (n=4; * Significant differences between all groups, ** Significantly different from groups [Ca2+] = 1.8mM and 4mM; p<0.05, SNK); (b) Effects of calcium concentration on frequency-dependent dynamic shear modulus of chondrocyte- alginate constructs after incubation for 28 days. (* Significantly different from 0.01Hz; p<0.05, SNK).