Word: urushiol
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...More immediately, the Forest Service is testing a method for quickly showing if a person is sensitive to the poison ivy family. In the test, also developed at U.C.S.F., a small drop of the plant's poisonous chemical, urushiol, is placed on the arm, and the reaction is monitored...
Scientists have long understood how to make vaccines from urushiol. But what protection these drugs provided was accompanied by an excruciating side effect: anal itching. Last year, researchers found a way to neutralize the urushiol molecules that cause the itching. Dr. William Epstein, who heads the U.C.S.F. research team, told a meeting of dermatologists in Toronto last week that the new vaccine could be on the market in time for the 1986 poison ivy season...
...Ayerst Laboratories began distributing a protective cream, Kerodex, which has saved gangs of railroad section workers from the itch. For both prevention and treatment of ivy poisoning, the National Lead Co. was boosting Zotox, in which an oxide of the wonder metal zirconium neutralizes the irritating factor urushiol...
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