Answer / Ashok Ram

Antigen-antibody reactions occur when an antigen (foreign substance) enters the body and is recognized as foreign by the immune system. The immune system responds by producing antibodies, proteins that are specific to the antigen. When an antigen encounters its corresponding antibody, they bind together, resulting in various immune responses such as activation of complement system or phagocytosis.

Name two immuno diffusion techniques?

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What are isotypes?

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Into how many types is active immunity further classified? What are they?

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What are the advantages of indirect immuno fluorescence?

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What is the function of thymus?

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Name some of the immuno suppressive agents?

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What is an analyte or ligand?

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What is immuno electrophoresis?

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Give an example of cross-reaction?

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What are TH- cells?

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What is secondary immune response?

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What is zone of antibody excess?

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