Antigens — definition?
Foreign substances inducing immune response
IgE — role?
Mediates allergic reactions
Precipitation — mechanism?
Soluble antigens + antibodies form visible complexes
Antigen — definition?
Foreign molecule inducing immune response.
IgG — role?
Main serum antibody, crosses placenta, neutralizes toxins.
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.
Answer 9 questions on Immunology Fundamentals.
1. What is the primary role of antigens in the immune response?
2. Which immunoglobulin class is mainly responsible for mucosal immunity and is found in secretions like saliva and breast milk?
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