T and B Cell binding to elicit a response to a T cell-dependent antigen, the B and T cells must come close together. B cell must receive two signals from the native antigen and the T cells cytokines premium vector by [email protected]

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illustration isolated healthy medicine medical structure disease education science helper immunity anatomy anatomical receptor antigen antigens mhc cytokinesis cd4 cytokine cytokines immune response antigen presentation cell receptor t cell receptor passive immunity active immunity th2 activated cell cell independent cell dependent cell helper

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