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Urushiol, the chemical in poison ivy, is also harvested from the Japanese lacquer tree to coat lacquerware. Here, a rash caused by lacquerware that likely was not properly cured.
October 15, 2012 Researchers have developed a clever new method to detect the chemical that causes the annoying itch. But urushiol isn't all bad. It's also behind the shine of beautiful Japanese lacquerware.
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