Summer allergy.
D000485:Allergens; D000937:Antigen-Antibody Reactions; D006636:Histamine Release; D006801:Humans; D006967:Hypersensitivity / Q000276:immunology*; D006255:Rhinitis, Allergic, Seasonal; D012621:Seasons; D014581:Urticaria
D000485:Allergens