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3D-hCB constructs with HCF densities of 75 K and 150 K. (A) COL I expression observed at week 1, 2, and 4 for both HCF densities. (B) COL V expression observed at week 1, 2, and 4 for both HCF densities. * = p < 0.05; ** = p < 0.01; *** = p < 0.001; **** = p < 0.0001. n = 3.
