Table 2. Slopes of mutation frequencies vs. dose in Gy.

	γ-rays	12C nuclei	56Fe nuclei
Sperm
DL	0.057 ± 0.004	0.075 ± 0.005	0.085 ± 0.01
TM	(1.50 ± 0.14) × 10−3	(2.54 ± 0.36) × 10−3	(2.8 ± 0.1) × 10−3
Spermatids
DL	0.035 ± 0.002	0.054 ± 0.002	0.070 ± 0.007
TM	(0.85 ± 0.10) × 10−3	(1.8 ± 0.3) × 10−3	(2.5 ± 0.3) × 10−3
Spermatogonia
DL	0.0039 ± 0.0046	0.021 ± 0.005	0.023 ± 0.016
TM	(1.8 ± 1.2) × 10−4	(0.18 ± 0.22) × 10−3	(0.30 ± 0.09) × 10−3

Values reflect best fits, linear regressions ± SD.