Antigens — definition?
Foreign substances inducing immune response
Antigen — definition?
Foreign molecule inducing immune response.
IgE — role?
Mediates allergic reactions
IgG — role?
Main serum antibody, crosses placenta, neutralizes toxins.
Precipitation — mechanism?
Soluble antigens + antibodies form visible complexes
Agglutination — process?
Clumping of insoluble antigens with antibodies.
Precipitation — mechanism?
Formation of insoluble immune complexes.
Prozone phenomenon — effect?
False negatives due to antibody excess.
Postzone phenomenon — effect?
False negatives due to antigen excess.
T lymphocytes — development?
Mature in thymus; subsets include helper and cytotoxic.
Test your knowledge with 9 questions on Immunology Fundamentals.
1. What is the primary role of antigens in the immune response?
2. Which immunoglobulin is primarily responsible for mucosal immunity and is present in secretions such as saliva and breast milk?
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