what part of the dust mite contains the primary allergen
House dust mite The mite's gut contains potent digestive enzymes (notably Peptidase 1) that persist in their feces and are major inducers of allergic reactions such as wheezing. The mite's exoskeleton can also contribute to allergic reactions. Unlike scabies mites or skin follicle mites, house dust mites do not burrow under the skin and are not parasitic.[6]
Frances Fisher Frances Louise Fisher[1] (born 11 May 1952)[2] is a British-American actress.
Allergy Common allergens include pollen and certain food.[10] Metals and other substances may also cause problems.[10] Food, insect stings, and medications are common causes of severe reactions.[3] Their development is due to both genetic and environmental factors.[3] The underlying mechanism involves immunoglobulin E antibodies (IgE), part of the body's immune system, binding to an allergen and then to a receptor on mast cells or basophils where it triggers the release of inflammatory chemicals such as histamine.[11] Diagnosis is typically based on a person's medical history.[4] Further testing of the skin or blood may be useful in certain cases.[4] Positive tests, however, may not mean there is a significant allergy to the substance in question.[12]
Vein Veins are less muscular than arteries and are often closer to the skin. There are valves in most veins to prevent backflow.