Table 2. Concentration of Analytes (pg/mL) Secreted by hMSCs in 3D Culture^a.

sample	EGF	FGF-2	IL-8	TNF-α	VEGF
hMSC	<16	516.89 ± 41.98	7773.18 ± 1231.20	<3.2	6118.68 ± 259.21
background, culture medium	<16	<400	<3.2	<3.2	<400

^aNote, readouts reported as less than a specific value indicate that negligible concentrations of factors were present in the sample, so the minimum value accepted for the standard curve concentration is reported. Standard error values for sample concentrations are reported (n > 5).