Table 3.
Bone volume and bone mineral density of the regenerated rat calvaria at 1 week and 4 weeks after bone implantation

Group	BV (mm3)		BMD (g/mm3)
	1 week	4 weeks	1 week	4 weeks
CD	0.145 ± 0.170	2.944 ± 2.699	0	0.018 ± 0.040
Fresh G	1.289 ± 0.299**	2.739 ± 1.307	0.010 ± 0.009	0
Fresh T	2.251 ± 0.497**,†	3.607 ± 1.345	0.010 ± 0.011	0.010 ± 0.111
Chem T	5.016 ± 0.594**,††,‡‡	9.792 ± 5.508*,†,‡	0.058 ± 0.012	0.051 ± 0.051

Values are expressed in mean ± S.D. (n=5).
p<.05 as compared with the critical defect group.
p<0.01 as compared with the critical defect group.
p<0.05 as compared with the fresh general pig bone group.
p<0.01 as compared with the fresh general pig bone group.
p<0.05 as compared with the fresh transgenic pig bone group.
p<0.01 as compared with the fresh transgenic pig bone group.
BV: bone volume, BMD: bone mineral density
CD: critical defect, Fresh G: fresh general pig bone, Fresh T: fresh transgenic pig bone, Chem T: chemical treated transgenic pig bone.