STUDIES ON THE TOXICITY OF COAL-TAR DYES II. EXAMINATION OF THE BIOLOGICAL REACTION OF COAL-TAR DYES TO VITAL BODY

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Abstract
The toxicity of xanthene dyes were studied by various interaction between the dyes and the components in vital body. (1) An increase in the amount of Rose Bengale adsorbed on the gill of fish was followed by the increase in red corpuscle number, and it was assumed that the death of fish in xanthene dye solution was due to anoxemia. (2) Binding capacity of xanthene dyes with bovine serum albumin decreased in the following; Rose Bengale, Phloxine, Erythrosine, Eosine and Uranine. This order was quite coincident with the toxicity compared by TLm values. (3) From the results of rec-assay test by use of Bacillus subtilis, it was confirmed that Phloxine and Rose Bengale had DNA-damaging capacity related to the mutagenecity.

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