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Crossreactivity between silver birch (t3) and Red River Birch (Betula nigrans)

What is the degree of crossreactivity between common silver birch (t3) and Red River Birch, Betula nigrans?

There are no exact % of cross-reactivity between these two species.

 

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The cross-reactivity between pollen species of one genus is in general extensive and t3 is a good marker for all species in the Betulaceae genus. Probably none of B. Nigra sensitized patients would be missed with t3, but there are no data to confirm this since IDD have never produced any B.Nigra ImmunoCAP tests.

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Specific IgE, Allergens
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As in all diagnostic testing, the diagnosis is made by the physican based on both test results and the patient history.