IgA for Allergic Diseases
By disrupting its motility, vying for epithelial attachment sites, and enhancing the viscoelasticity of airway secretions, IgA typically neutralizes poisons and bacteria (viruses) on mucosal surfaces. IgA molecules, not IgE, are found in healthy individuals' blood, and these individuals' T cells are unable to proliferate in response to allergens, which is likely due to the establishment of a regulatory pathway that actively inhibits the response to allergens.