Allergen Stocks List
Symbol | Grade | Name | % Change | |
---|---|---|---|---|
NC | A | NACCO Industries, Inc. | -2.97 | |
NEOG | D | Neogen Corporation | 1.12 |
Related Industries: Coal Diagnostics & Research
Symbol | Grade | Name | Weight | |
---|---|---|---|---|
AWEG | B | Alger Weatherbie Enduring Growth ETF | 3.07 | |
XHE | B | SPDR S&P Health Care Equipment | 1.55 | |
IVEG | B | iShares Emergent Food and AgTech Multisector ETF | 0.95 | |
SMCP | B | AlphaMark Actively Managed Small Cap ETF | 0.78 | |
MOO | D | Market Vectors Agribusiness ETF | 0.69 |
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- Allergen
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.
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