This pilot study is collaboration between the Weill Cornell Medical College, Department of Genetic Medicine and Yale University and will examine the pathways involved in allergic response, primarily in food allergy; specifically peanut allergy.We will also study non-allergic donors as well as patients with atopic disorders, primarily as control subjects.We believe that this study will lead to discovery of significant pathways involved in the allergic pathway that can be explored in more detail during follow-up studies in order to address mechanistic questions that cannot be answered in a pilot trial. We believe that such a pilot study represents the ideal approach to identify effective therapeutic interventions and to simultaneously better understand the underlying mechanistic properties involved in the allergy cascade. We think that this study forms the basis for a novel avenue of research into the pathogenesis of allergic pathways, a disease that is still associated with significant morbidity and mortality.