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Kendrick Rau
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Is an allergen a antigen?
NO
What is a substance that causes an immune response called?
Antigen
What is a substance that induces an immune response?
This substance has a general name called an antigen.
How is histamine related to allergies?
An allergy is a hypersensitivity to an environmental antigen (allergen). If a person has a hypersensitivity to an antigen they will have a patholigic (disease) response when exposed to that antigen. When the hypersensitive individual is initially exposed to the antigen, they will produce allergen specific antibodies, primarily immunoglobulin E (IgE), that will during subsequent exposures bond with membrane proteins on the mast cell membrane. This bonding allows degranulation (the release of stored chemicals) of the mast cell. Mast cells manufacture and store chemicals, including histamine, that are responsible for the affects of inflamation.
What antibody is produced in a reaction to an allergen?
The antibody is specific to the antigen (allergen). Different antibodies are produced at different times of exposure (IgM=acute; IgG=longterm) or in different systems of the body (IgA is produced in the gut).
The initial exposure to an antigen is called?
Some more context would be helpful. This question sounds like it may be asking about antigen exposure in the field of allergic disease, but it's hard to be sure. Hypersensitivity reactions (the immune system basis for allergies) are based on the principle that allergy follows initial sensitization to an antigen.
Which of the following is not an antigen that may be found on the surface of an erythrocyte a A antigen b B antigen c O antigen d Rh antigen?
A antigen
What is the molecule that can be recognized by the immune system?
Antigens.
What is antigen in German?
Abwehrstoff or Antigen
A foreign molecule that causes a specific immune response is?
Depending on the exact response, the substance is generally called a pathogen, yet more specifically depending on the nature of the response and origin of the substance, could be an antigen, allergen, carcinogen, etc.
In order for a lymphocyte to respond to an antigen the antigen must?
the antigen must bind to the receptor
How is an allergy is different from an allergen?
An allergy is the reaction that the body will have, where as an allergen is something that causes the allergy to occur.
