Table 1.

Experimental Design.

Group	Rat Number	Treatment Duration (Weeks)	Total Radiation Dose (Gy)
1	n = 5	1	7.5
2	n = 5	2	15
3	n = 5	3	22.5
4	n = 5	4	30
5	n = 5	5	37.5
6	n = 5	6	45
Control	n = 6	6	0

Groups of rats (n = 5) were exposed to varying doses of fractionated radiotherapy over a six week period. Control rats (n = 6) received no fractionated radiotherapy.