TABLE 2.
Classical DCA Frequencies and Intercellular Distribution of Dicentrics for Different Gamma-Ray Doses Scored Manually
| Distribution of dicentrics |
|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dose (Gy) | Cells | DC | D0 | D1 | D2 | D3 | D4 | D5 | D6 | D7 | D8 | D9 | Y ± SE | σ2/y | u test |
| 0 | 200 | 0 | 200 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.000 ± 0.000 | 1.00 | 0.00 |
| 2.0 | 200 | 53 | 150 | 47 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.265 ± 0.036 | 0.85 | –1.49 |
| 4.0 | 200 | 188 | 81 | 70 | 32 | 14 | 3 | 0 | 0 | 0 | 0 | 0 | 0.940 ± 0.069 | 1.04 | 0.44 |
| 6.0 | 200 | 382 | 19 | 60 | 70 | 35 | 7 | 6 | 2 | 1 | 0 | 0 | 1.910 ± 0.098 | 0.81 | –1.88 |
| 8.0 | 200 | 526 | 18 | 30 | 48 | 52 | 28 | 15 | 7 | 1 | 1 | 0 | 2.630 ± 0.115 | 0.95 | –0.55 |
| 10.0 | 200 | 789 | 2 | 7 | 33 | 45 | 38 | 42 | 18 | 10 | 4 | 1 | 3.940 ± 0.140 | 0.72 | –2.81 |
Notes. Data pooled from four donors: two females (donors 1 and 2), ages 31 and 30, respectively; and two males (donors 3 and 4), ages 36 and 33, respectively. DC=dicentric chromosomes; Y ± SE: yield ± standard error; σ2/y=dispersion index (σ=variance, y=mean); u=normalized unit of the dispersion index.