Table 1.

Groups and doses received.

Group	Number of rats	Dose at 1 cm-depth in the rat
		Peak dose	Valley dose	Mean
1.Normal rats-controls	5	0 Gy	0 Gy	0 Gy
2.Normal rats-irradiated (lowest dose)	6	57 ± 5 Gy	5.0 ± 0.3 Gy	20 ± 2 Gy
3.Normal rats-irradiated (highest dose)	5	81 ± 6 Gy	7.2 ± 0.6 Gy	28 ± 2 Gy
4.Tumor-bearing rats-controls	5	0 Gy	0 Gy	0 Gy
5.Tumor-bearing rats-irradiated	5	65 ± 6 Gy	5.8 ± 0.5 Gy	22 ± 2 Gy