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What is an allergen?

wirter: read 1207 ci time:2012年8月18日 daying

Allergic reaction induced by antigen called allergens. Allergens are allergic to the necessary conditions. Allergic reaction caused by antigenic substance common 2000-3000, nearly 20000 medical records. They by inhalation, ingestion, injection or contact way make the body produce allergic phenomenon. Common allergens are as follows: ( 1) inhaled allergens: such as pollen, catkins, dust, mites, animal dander, oil, paint, automobile tail gas, gas, cigarettes etc.. ( 2) ingestion type allergens: milk, eggs, fish, such as cattle and sheep meat, seafood, animal fat, alcohol, drugs, variant protein, antibiotics, anti-inflammatories, sesame oil, flavor, onion, ginger, garlic, and some vegetables, fruits and other. ( 3) contact allergens: such as cold air, hot air, ultraviolet radiation, radiation, cosmetics, shampoo, detergent, soap, hair coloring agent, chemical products, plastic, metal jewelry ( necklaces, rings, watches, earrings ), bacteria, molds, viruses, parasites and other. ( 4) injection type allergens: such as penicillin, streptomycin, xenogeneic serum. ( 5) the tissue antigens: mental stress, work pressure, microbial infections, ionizing radiation, burn and other biological, physicochemical factors that affect the structure or composition changed their tissue antigens, and as a result of trauma or infection and release their concealed antigens, may also become allergens.
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tome:2012年8月18日  
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