Allergen Stocks List
Symbol | Grade | Name | % Change | |
---|---|---|---|---|
NEOG | C | Neogen Corporation | 0.53 | |
NC | F | NACCO Industries, Inc. | 2.00 |
Related Industries: Coal Diagnostics & Research
Symbol | Grade | Name | Weight | |
---|---|---|---|---|
XHE | D | SPDR S&P Health Care Equipment | 1.63 | |
IVEG | D | iShares Emergent Food and AgTech Multisector ETF | 1.26 | |
SMCP | C | AlphaMark Actively Managed Small Cap ETF | 1.26 | |
MOO | F | Market Vectors Agribusiness ETF | 0.89 | |
ANEW | B | ProShares MSCI Transformational Changes ETF | 0.48 |
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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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