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This article is part of the Tobacco portal on Sourcewatch funded from 2006 - 2009 by the American Legacy Foundation.

Chemosol is the trademark name of a fuel additive that in the late 1960s was believed to reduce the carcinogenicity of combusted tobacco products. In 1968, experiments were performed in which cigarette tar concentrate treated with Chemosol was painted on the skin of mice. For the experiment, the mice were divided into three groups: Group A mice, which received dermal paintings with untreated tobacco whole condensate, developed malignancies in 25 per cent of the animals within the painted skin zone. Group B mice, which received dermal paintings with Chemosol-treated tobacco whole condensates, developed no malignancies within the painted zone. Group C mice served as overall controls and were painted with only acetone. They showed no malignancies.[1]

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  1. High Tar Foundation Elimination of Mouse Skin Carcinogenicity of Cigarette Smoke Condensates by Chemosol Scientific Report. September 23, 1968. 5 pp. Bates No. 1000033481/3485