Table 3. Relative protein expression of Sp1 and collagen I.

Time (wk)	n	Sp1	Collagen I
0	15	0.797±0.038	0.928±0.016
2	15	0.543±0.010a	0.743±0.012c
4	15	0.378±0.010a	0.552±0.014c
1 after 4	15	0.369±0.014a	0.533±0.011c
6	15	0.350±0.018a	0.402±0.019c

^aP<0.05, ^cP<0.05, compared with 0wk.