Cell type	Cells seeded per ring	Ring diameter	Culture Duration	Functional analysis performed
Rat SMC	0.5, 1, or 3 x 106	2, 4, or 12 mm	3 days	Current study; N/A
iPSC derived SMC 11	0.6 x 106	2 mm	17 days	Contractility testing, uniaxial tensile test, histological analysis
Human SMC 22	0.4 x 106	2 mm	2, 7, or 14 days	Uniaxial tensile test, histological analysis
Human MSC 14	0.4 x 106	2 mm	21 days	Uniaxial tensile test, histological analysis, ring fusion and tube compression testing, differentiation into cartilage tissue