Allergen profile

Allergen: Rye-grass Family name: Grasses Scientific name: Lolium perenne L. Family name latin: Poaceae   Description: Reaching a height of up to 50 cm, this spiked grass, unlike the couch grass, has its seed heads facing the rachilla with their short side; perennial; flowering season: V - IX; rich fodder; main ingredient of all lawn grass mixtures; nitrogen indicator;   Occurence: Commen and frequent on all fields, rubble heaps and along pathsides; often also cultivated;   Related species: Lolium multiflorum Lam., common or Italian rye-grass; a forage grass originating from the Mediterranean area commonly acknowledged to be especially good fodder, very widespread today and greatly naturalized in central Europe (V - VIII);   Allergy trigger: Pollen, approx. 30 µm;   Invasions path: Inhalative (May - September);   Synonyms: Raygrass   Allergology: Because of its frequency and great distibution it is an allergen with high clinical relevance;   Immunology: Primary allergen: Lol p I, MW 27 000 - 35 000; Lol p II, MW 11 000; Lol p III, MW 11 000; Lol p IV, MW 57 000; Lol p V, MW 25 000 - 30 000; Lol p IX; Lol p X, MW 12 000; Lol p XI, MW 15 000;   Exposure from: May   Exposure to: October   Clinical relevance: heavy   Cross reactivities: Occurrence frequently Tomato Timothy Ryegrass, perennial Cocksfoot Occurrence possible Red Fescue Rye flour Oat flour Barley flour Bermuda grass Vernal grass, scented Blue grass, (Kentucky) Meadow fescue Birch, Weeping Olive Latex Reed, common Barley Apple Johnson grass (Sudan grass) Peach Oats, common Pineapple