| http://www.w3.org/ns/prov#value | - </p><p>One way to see if a chemical will hurt people is to learn how the chemical is absorbed, used, and released by the body; for some chemicals, animal testing may be necessary. <a href=http://www.eoearth.org/article/Animal_testing_alternatives" title=Animal testing alternatives">Animal testing</a> may also be used to identify health effects such as cancer or birth defects.
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