1. Write a sentence containing a singnal phrase.
There's a long list of cancer threats that The National Institute for Enviromental Health Sciences (NIEHS) keeps in mind, and not all of them are as danger as they say. According to the NIEHS "...it removed sacchrin as a potential cancer-causing agent because tests that showed it cause cancer in rats did not apply to humans."
2.Reference entry.
Adams, M. J. (2000) U.S. report adds to list of carcinogens. The New York Times. Section F; Page 4; Column 4.
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