Share Tweet Share Email Follow. The Tony Awards are finally here and weâve got all the details on what time theyâre on, which channel you need to watch and where the show is taking place. This year, there are two hosts â Alan Cumming and Kristin Chenoweth, who are Broadway royalty.
An allergen is a type of antigen that produces an abnormally vigorous immune response in which the immune system fights off a perceived threat that would otherwise be harmless to the body. Such reactions are called allergies.
An allergy is a chronic condition involving an abnormal reaction to an ordinarily harmless substance called an allergen. Allergens can include aeroallergens such as dust mite, mold, and tree weed and grass pollen, as well as food allergens such as milk, egg, soy, wheat, nut or fish proteins. If you have an allergy, your immune system views the allergen as an invader and a chain reaction is initiated. White blood cells of the immune system produce IgE antibodies. These antibodies attach themselves to special cells called mast cells, causing a release of potent chemicals such as histamine.