Allergen Stocks List
|JSMD||A||Janus Small/Mid Cap Growth Alpha ETF||1.52|
|XHE||C||SPDR S&P Health Care Equipment||1.28|
|XMLV||A||PowerShares S&P MidCap Low Volatility Portfolio||1.12|
|MOO||A||Market Vectors Agribusiness ETF||0.66|
|ANEW||B||ProShares MSCI Transformational Changes ETF||0.61|
View all Allergen related ETFs...
|Apr 14||NEOG||Here's Why You Should Hold on to NEOGEN (NEOG) Stock for Now|
|Apr 12||NEOG||Neogen (NEOG) Hits New 52-Week High: What's Driving It?|
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.
In technical terms, an allergen is an antigen that is capable of stimulating a type-I hypersensitivity reaction in atopic individuals through Immunoglobulin E (IgE) responses. Most humans mount significant Immunoglobulin E responses only as a defense against parasitic infections. However, some individuals may respond to many common environmental antigens. This hereditary predisposition is called atopy. In atopic individuals, non-parasitic antigens stimulate inappropriate IgE production, leading to type I hypersensitivity.
Sensitivities vary widely from one person (or from one animal) to another. A very broad range of substances can be allergens to sensitive individuals.