In Rome's marble-floored National Research Institute, 42 experts from 21 nations gathered last week under the sponsorship of the International Union Against Cancer to explore the case against a worrisome potential cancer hazard: the dyes and additives used in the preparation and preservation of foods, soaps, cosmetics. The conference's conclusion: although the vast majority of dyes, additives and wrapping materials have not yet been adequately tested, there is clear evidence that some possess cancer-causing qualities. Doctors were careful to point out that they were not drawing a bill of particulars, but merely listing substances that require further investigation. Among suspects:
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