Table 2.
Dose | S9-Mixture | G | B | D | R | g | b | e | AFd |
---|---|---|---|---|---|---|---|---|---|
Short-term treatment (3 h) | |||||||||
Negative controla | − | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0/200 |
Positive controlb | − | 0 | 0 | 0 | 1 | 1 | 5 | 18 | 25/200* |
2.5 | − | 0 | 0 | 0 | 1 | 0 | 0 | 3 | 4/200 |
1.25 | − | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0/200 |
0.625 | − | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1/200 |
Negative controla | + | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 2/200 |
Positive controlc | + | 0 | 1 | 2 | 0 | 0 | 8 | 2 | 13/200* |
2.5 | + | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1/200 |
1.25 | + | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1/200 |
0.625 | + | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1/200 |
Long-term treatment (20 h) | |||||||||
Negative controla | − | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0/200 |
Positive controlb | − | 0 | 0 | 2 | 0 | 2 | 5 | 11 | 20/200* |
2.5 | − | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0/200 |
1.25 | − | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0/200 |
0.625 | − | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0/200 |
G: chromosome gap; B: chromosome break; D: dicentric; R: ring; g: chromatid gap; b: chromatid break; e: chromatid exchange.
Statistically significant (p < 0.05, Chi-square test) when compared to the control group.
Ham's/F-12 Culture medium.
6 μM mitomycin C.
80 μM cyclophosphamide.
Aberration frequency: Number of cells with chromosome aberration in 200 metaphase cells (n/200).