Allergy is defined as a "harmful, increased susceptibility to a specific substance," also known as hypersensitivity, while immunity is characterized as a "protective, enhanced resistance. An allergy is an abnormal reaction to ordinarily harmless substance or substances. These sensitizing substances, called allergens, may be inhaled, swallowed or come into contact with the skin. When an allergen is absorbed into the body it triggers white blood cells to produce IgE antibodies. These antibodies attach themselves to mast cells causing release of potent chemical mediators such as histamine, causing typical allergic symptoms. Some common allergens are pollen, mold spores, dust mites, animal dander, feathers, foods, medications, and insect stings. While there are many symptoms of allergy, watery, itchy eyes, sneezing, and a constant runny nose are some common symptoms.
Why so many pyramids
written by Kumar , December 26, 2007
U used 10,000 pyramids in your place. It costs a lot to have so many. Even Rs. 15 per would mean Rs. 15,00,000.
How expensive is it for a flat of 2,000 sq.ft
Response from Premal Betai: You may require to contribute anywhere between Rs.2000 to Rs.5000 for a flat of 2000 square feet.