Phase-contrast photomicrographs (×100) of cell-scaffold constructs after in vitro culture for 12 d; (A) group A (dynamic seeding and dynamic culture), (B) group B (hydrogel-assisted seeding and static flask culture, (C) group C (static seeding and static flask culture, control group), and (D) group D (hydrogel-assisted seeding and dynamic culture).

<p>Bar lengths are 100 um.</p>