Table 3.

Average square root transformation values (√X + √(X+1)) of mean aberrations in 100 cells scored ± standard error of the mean (S.E.) derived from the raw data of the frequencies of each type of aberration, including abnormal cells as shown in Table 1 (1 h post-irradiation).

Dose (Gy)	Total number of abnormal cells ± S.E.	Total number of chromatid breaks ± S.E.	Total number of iso-chromatid breaks ± S.E.	Total number of exchanges ± S.E.
0	2.67 ± 0.52	2.33 ± 0.47	1.40 ± 0.41	1.04 ± 0.35
0.05	5.03 ± 0.68	5.40 ± 0.51	4.90 ± 1.02	2.03 ± 0.57
0.10	5.01 ± 0.61	5.55 ± 0.84	3.41 ± 0.41	1.21 ± 0.25
1.00	13.82 ± 1.76	16.49 ± 3.70	6.14 ± 1.16	3.54 ± 0.79