News tagged with allergen
Related topics: allergy
Allergen
An allergen is a nonparasitic antigen capable of stimulating a type-I hypersensitivity reaction in atopic individuals.
Most humans mount significant Immunoglobulin E (IgE) responses only as a defense against parasitic infections. However, some individuals mount an IgE response against common environmental antigens. This hereditory predisposition is called atopy. In atopic individuals, non-parasitic antigens stimulate inappropriate IgE production, leading to type I hypersensitivity. Sensitivities vary from one person to another and it is possible to be allergic to an extraordinary range of substances.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
Pollen count apps for smartphones are nothing to sneeze at
Kate O'Reilly's spring allergy survival kit includes the usual stuff - nasal sprays, allergy pills and a box of tissues. This season, she's added a new weapon to her line of defense: an app on her smartphone.
Immunology
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