Oregon State University

allergy

an abnormal immune reaction to naturally occurring protein substances (allergens). Proteins introduced in crops through genetic engineering are from sources with no history of allerginicity or toxicity; they do not resemble known toxins or allergens; and they have functions that are well understood. They are assessed for potential allergenic or toxic activity in accordance with guidelines developed by relevant international organizations, based on digestibility, homology, and mammalian tests. (All three types of tests are performed in every case.) No allergic reaction to a GE crop has ever been reported despite extensive biosafety tests in several countries, including the US.

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