title: An introduction to allergic disease.
mesh_terms: D006801:Humans; D006967:Hypersensitivity / Q000175:diagnosis / Q000235:genetics; D006968:Hypersensitivity, Delayed / Q000209:etiology; D006969:Hypersensitivity, Immediate / Q000209:etiology; D007073:Immunoglobulin E / Q000502:physiology; D013601:T-Lymphocytes / Q000502:physiology
chemical_list: D007073:Immunoglobulin E