Fig 1.
The schemes of fractionated X-irradiation
A: 10×0.1 Gy. B: 5×0.2 Gy. C: 2×0.5 Gy. T indicates each time interval between fractions; these intervals ranged from 1 min to 1440 min.
Fig 2.
The schemes to detect the frequency of mitotic MRC-5 cells.
A: Examination of the mitotic indices (MIs) during the first and the second 24 hour-incubations after the replating. B: Examination of the MIs between 24 hours and 48 hours after the replating.
Table 1.
Frequency of mitotic MRC-5 cells
Table 2.
Number of MRC-5 cells after X-irradiation
Fig 3.
The dose-response of dicentric chromosomes in MRC-5 cells after a single-dose of X-ray irradiation.
Full circles: The numbers of dicentric chromosome corrected for the baseline number. Results are means of two or three independent experiments ± standard error.
Table 3.
Frequency of dicentric chromosomes in MRC-5 cells after X-irradiation
Fig 4.
Frequencies of dicentric chromosomes in MRC-5 cells exposed to fractionated X-irradiation.
A: 10×0.1 Gy. B: 5×0.2 Gy. C: 2×0.5 Gy. Full circles: The numbers of dicentric chromosome corrected for the baseline number. Results are means of two or three independent experiments ± standard error.
Table 4.
Frequency of dicentric chromosomes in MRC-5 cells after fractionated X-irradiation with 10 × 0.1Gy
Table 5.
Frequency of dicentric chromosomes in MRC-5 cells after fractioned X-irradiation with 5 x 0.2Gy
Table 6.
Frequency of dicentric chromosomes in MRC-5 cells after fractioned X-irradiation with 2 × 0.5Gy