Table 1.

Bioreactor osteogenesis^*

Technique	Weeks	Control	Experimental	p Value	Standard error
Histomorphometry	4	0.1	5.0	0.00008	0.25
	8	0.24	6.3	0.0001	0.63
	12	0.7	14.3	0.0002	1.68
Microcomputed tomography	4	10.1	10.3	0.86	1.10
	8	12.2	12.5	1.00	1.57
	12	16.6	18.3	0.59	2.97

^*The mean amount of new bone produced on the scaffold was calculated in two-dimensional area and expressed as percent increase compared with scaffold alone for the control and experimental limbs of the experiment; four animals for each cell.