Antibodies and the Immune Response

Antibody isotypes can change upon B-cell activation. Upon maturity, both IgM and IgD become expressed as membrane-bound forms on the B cell surface. Activation results in the production of antibody in secreted forms. Isotype switching takes place with some daughter cells to pro- 

Biopharmaceuticals in Plants Toward the Next Century of Medicine 

Some T cells become helper cells and secrete some cytokines that attract fresh macrophages, neutrophils and other lymphocytes, and other cytokines to direct the recruits once they arrive on the scene 

The MHC antlgen complex activates the T cell receptor and the T cell secretes cytokines. 

Some cytokines spurthe growth of more T cells 

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