Table 1.

Treatment Groups

Treatment	Scaffold	rhNell-1	Pericytes	n (implants)
Carrier Alone	hCBC (100 μL)	50 mg TCP alone	None	8
Nell-1 Alone	hCBC (100 μL)	15 μg Nell-1 in 50 mg TCP	None	8
Pericyte Alone	hCBC (100 μL)	50 mg TCP alone	2.5×105 in 20 μL	8
Pericyte+Nell-1	hCBC (100 μL)	15 μg Nell-1 in 50 mg TCP	2.5×105 in 20 μL	8
Pericyte+Nell-1	hCBC (100 μL)	100 μg Nell-1 in 50 mg TCP	2.5×105 in 20 μL	8
Pericyte+Nell-1	hCBC (100 μL)	300 μg Nell-1 in 50 mg TCP	2.5×105 in 20 μL	8

hCBC, human cortical/cancellous bone chip; TCP, tricalcium phosphate.