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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).
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Do mast cells release histamine as a result of the allergen-antibody reaction?
Yes
What does allergen antibody react?
they react with different blood types!
As a result of an allergen-antibody reaction?
An allergic reaction is triggered by later encounters with the same allergen, which promptly binds and cross-links the IgE antibodies on the surface of the mast cells and basophils. This event includes an enzymatic cascade that causes the mast cells and basophils to degranulate, releasing a flood of histamine and other inflammatory chemicals that together induce the inflammatory response typical of allergy. page 798 anatomy and phisiology eighth edition
What is the difference between alloimmunization and isoimmunization?
the autoimmune reaction is the reaction between the antibody and antigene when both come from the same body but the isoimmune reaction is between the antigene and antibody produced for the same antigene ( the same according to the type but not the immunity )
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.
Which term describes a severe reaction to an allergen?
Anaphylaxis
A protein produced by the body to combat foreign particles?
Antibody
What is the reaction between antibody and particulate antigens called?
agglutination reaction
Is an allergen a substance of an allergic reaction in an individual?
An allergen is any substance that may cause an allergic reaction. So if an individual has an allergy to penicillin then penicillin is the stimulus for that individuals allergic reaction and PCN is an allergen but only for that individual. So any substance including nuts, pollen and drugs can act as an allergen. The key point is that allergens will only cause an allergic reaction in a person whose body perceives that substance as foreign but not for the general population.
What is a disease-fighting protein created by the immune system in response to the presence of a specific antigen?
Antibody - produced by B lymphocytes.
What is an alloreactivity?
An alloreactivity is the reaction of a lymphocyte or antibody with an alloantigen.
Will an antibody produce against the influenza virus lock onto a common cold virus?
No because an antibody is produced for that specific pathogen. An antibody produced against influenza will not lock onto a common cold virus because the binding site on the virus is different compared to that of an antibody.
