- Undifferentiated ASCCSs: ASCs were cultured with RoosterNourish™-MSC-XF. The culture media were replaced every 2 days, up to 18 days from the initial seeding day.
- Osteoblast cell sheets: ASCs were cultured with Osteomax-XF Differentiation Medium (Millipore-Sigma, Burlington, MA). The culture media were replaced every 3 days, up to 17 days from the initial seeding day.
- Chondrocyte cell sheets: ASCs were cultured with a MesenCult™-ACF Chondrogenic Differentiation Kit (Stem Cell, Vancouver, Canada). The culture media were replaced every 2 days, up to 19 days from the initial seeding, and were also replaced when 10 M of ROCK Inhibitor y-27632 (MedChemExpress, Monmouth Junction, NJ, United States) was used.
- Skeletal muscle differentiation medium (PromoCell, Heidelberg, Germany) was used to show that the cells do not form a multilayer cell sheet and the cell density does not change by measuring the transmittance.