From delipidated peanut extract by multi-step chromatography. Purity on silver stained SDS-PAGE >95%.

Preservative-free and carrier-free in phosphate buffered saline, pH 7.4. Sterile filtered.

(1) Ara h 2 appears as a doublet ⁽⁴⁾.

(2) Protect from exposure to light.

(3) Avoid repeated freeze-thaw cycles.

Burks AW, Williams LW, Connaughton C, Cockrell G, O’Brien TJ, Helm RM. Identification and characterization of a second major peanut allergen, Ara h II, with use of the sera of patients with atopic dermatitis and positive peanut challenge. J Allergy Clin Immunol 1992;90:962-9.

Sen M, Kopper R, Pons L, Abraham EC, Burks W, Bannon GA. Protein structure plays a critical role in peanut allergen stability and may determine immunodominant IgE-Binding epitopes. J Immunol 2002;169:882-7.

McDermott RA, Porterfield HS, El Mezayen R, Burks AW, Pons L, Schlichting DG, Solomon B, Redzic, JS, Harbeck RJ, Duncan MW, Hansen KC, Dreskin SC. Contribution of Ara h 2 to peanut-specific, immunoglobulin E-mediated, cell activation. Clin Exp Allergy 2007;37:752-763.