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HUMORAL-MEDIATED IMMUNITY, SECONDARY RESPONSE - Coggle Diagram

- - - - Surface Ig that serve as the BCR play 2 role in B-cell activation:
      - Initiates a signalling cascade upon binding Ag derived from the microbes
      - BCR can deliver Ag to intracellular sites for Ag processing, so that antigenic peptides bound to MHC II can be returned to the B-cell surface (APC)