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).
Yes, mast cells release histamine in response to the allergen-antibody reaction. When an allergen binds to specific antibodies on the surface of mast cells, it triggers the release of histamine and other inflammatory mediators, leading to allergy symptoms.
they react with different blood types!
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
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 )
An allergy is the reaction that the body will have, where as an allergen is something that causes the allergy to occur.
Antibody
Anaphylaxis
Not including the antigen will prevent the primary antibody from binding to it which will disrupt the results of the ELISA. Not including the primary antibody will prevent the secondary antibody from binding it, which will again negatively affect the results of the ELISA. All components are necessary to get an accurate ELISA.
agglutination reaction
Antibody - produced by B lymphocytes.
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.
polyclonal antobody is the antibody produced for many or non specific antigens but antiserum is the antibody for a specific antigen