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The establishment of EVISA is funded by the EU through the Fifth Framework Programme (G7RT- CT- 2002- 05112).

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Challenger mechanism

Also called the Challenger scheme, which was proposed by Frederick Challenger. The mechanism is a series of metabolic reduction and oxidative methylation reactions that begin with the reduction of inorganic arsenate to inorganic arsenite and ultimately ends with the formation of trimethylarsine.


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