Antigens: foreign substances inducing immune responses; recognized via specific determinants.
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?
3. Which immunoglobulin class is mainly responsible for mucosal immunity and is found in secretions like saliva and breast milk?
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.
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