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  • Title: Inhibition of interferon gamma production by benzene and benzene metabolites.
    Author: Cheung SC, Nerland DE, Sonnenfeld G.
    Journal: J Natl Cancer Inst; 1988 Sep 07; 80(13):1069-72. PubMed ID: 3137358.
    Abstract:
    We exposed spleen cells from female Swiss/Webster mice to benzene and benzene metabolites to determine the effects of such exposure on interferon gamma induction by concanavalin A. Exposing the cells to benzene or phenol did not affect interferon gamma production, but exposing them to p-benzoquinone, catechol, or hydroquinone significantly inhibited interferon gamma production. Cell viability, as determined by trypan blue viability staining, was not influenced by the chemical treatment. When interferon gamma production was inhibited, the inhibition was dose dependent. The time of optimum production of interferon gamma after exposure to concanavalin A was not affected by treatment of the cells with p-benzoquinone. These data indicate the importance of dihydroxy and diketo metabolites as immunotoxic derivatives of benzene.
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