in experiments involving the induction of mitotic gene conversion at the tryptophan-5 and histidine-4 loci in the fluctuation test significant increases in prototrophic cells were produced in the presence of the insecticide lindex ( 0.05 microng/ml ) , the preservative thiomersal ( 0.0001 microng/ml ) , a mahogany hair dye ( 0.01 microng/ml ) , the herbicide paraquat ( 0.02 microng/ml ) and the alkylating agent ethyl methane sulphonate ( 0.1 microng/ml ) .
C1708726
loci
C0007634
cells