Peripheral human leucocyte culture from samplesof both sexes was used to screen the relativeclastogenecity of CoCl<sub>2</sub> and CsCl - both knowntoxic metals
Previous study has shown that the hermaproditicfish Rivulus ocellatus marmoratus is a suitablemodel for experimental hepatocarcinogenesis.Forfurther studies on
ULF-23HU fish cell line derived from the fin ofcentral mudminnow (Umbra limi) has an idealkaryotype (2n=23) for clastogenicity test ofmutagenic carcinogens.In t