EndoGrade™ Endotoxin-free Ovalbumin, manufactured in Germany by LIONEX, is purified from chicken egg whites and has a guaranteed endotoxin level (LPS) below 0.1 EU/mg. Formulation: Lyophilized. Contains no salts. Purity: >98% protein. Molecular weight: ~45 kDa. Synonyms: OVA, Plakalbumin, Allergen Gal d 2, Gal d II. Ovalbumin is one of the most extensively studied proteins in animal models and also an established model allergen for airway hyper-responsiveness (AHR). Ovalbumin reagents are commonly contaminated with endotoxins (lipopolysaccharides), a potent and pleiotropic inflammatory agent. Thus, LPS contaminations falsify research results in allergology research and immunization experiments. To meet the requirements of in vivo (e.g. injection, aerosolization) and in vitro (e.g. proliferation assays) studies, we offer EndoGrade™ Ovalbumin with superior quality and a guaranteed LPS level below 0.1 EU/mg.