Figure 3From: Engineered silica nanoparticles act as adjuvants to enhance allergic airway disease in mice OVA specific IgE and IgG1 expression. Serum levels of OVA specific IgG1 (A) are detected by an ELISA and presented as total serum concentration. OVA-specific IgE levels (B) are measured as optical density (OD). •: Significant changes (p < 0.05) when compared to non-SNP exposed animals, *: significant changes when compared to non-allergic controls.Back to article page