Table 1. MN and NA frequencies in peripheral blood erythrocytes of goldfish exposed to TCS.

Group	MN rate (%)	NA rate (%)
Control	0.48 ± 0.11	0.83 ± 0.09
Solvent control	0.59 ± 0.14	0.91 ± 0.13
0.1399 mg/l	1.22 ± 0.18**	1.81 ± 0.08**
0.2798 mg/l	1.63 ± 0.22**	2.34 ± 0.16**
0.5596 mg/l	1.81 ± 0.11**	2.88 ± 0.26**

Asterisks indicate statistically significant differences from the solvent control group (**P<0.01). Data are presented as the mean ± SD (n=5).