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Cockroach is one of the major indoor allergens for IgE-mediated allergic respiratory illnesses throughout the world. The American cockroach (Periplaneta americana) Per a 1 allergen is antigenically cross-reactive with the German cockroach (Blattella germanica) Bla g 1 allergen. The aim of this study was to identify linear B cell epitopes of Per a 1 that are recognized by human IgE. Per a 1 deletion...