What are allergies?
D000485:Allergens / Q000276:immunology*; D006801:Humans; D006967:Hypersensitivity / Q000276:immunology* / Q000517:prevention & control; D006968:Hypersensitivity, Delayed / Q000276:immunology; D006969:Hypersensitivity, Immediate / Q000276:immunology
D000485:Allergens