Table III.

TGF-β1 expression in bone marrow stromal cells in the different treatment groups.

Group	TGF-β1 (pg/ml)
Control	15.3992±3.1623
Osteoblast	41.7784±10.8950a,c
Serum	31.7868±2.0429a
Comprehensive induction	69.8832±4.3906a,b,d

Data are presented as the mean ± standard deviation; n=5 per group.

^aP<0.01 vs. the control group;

^bP<0.01 vs. the osteoblast group;

^cP<0.05,

^dP<0.01 vs. the serum group.

TGF, transforming growth factor.