Table 1. Mean values of TGF-β1 (two months) in each group.

Group, pg/mL		Group, pg/mL	P
Group 1 (406.43±120.59)	vs.	Group 2 (550.17±90.51)	0.005
Group 1 (406.43±120.59)	vs.	Group 3 (774.20±160.77)	<0.001
Group 2 (550.17±90.51)	vs.	Group 3 (774.20±160.77)	<0.001

Group 1: Control Group (n=9); Group 2: Irradiation Group (16 Gy) (n=9); Group 3: Irradiation Group (20 Gy) (n=9).