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Food allergy clinics a test of faith for desperate families
Samples of the six doses needed to complete treatment to build immunity against an allergy when combined with Xolair at National Allergy Center. The first dose contains 54mg of the allergen, in this case a powder mixture of hazelnuts, peanuts, almonds and walnuts. The final dose, also called a "maintenance dose," is made up of two hazelnuts, two peanuts, two almonds and half a walnut, and needs to be consumed daily. Photo by Magali Gauthier

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