0 0 votes Find the INCORRECT combination Surface immunoglobulins – B cell antigen receptor Affinity maturation - isotype switching Fc region of antibodies – binding to complement proteins Spleen, the secondary lymphoid organ – no connection with the lymphatic system Immunology gate2016 immunology + – Milicevic3306 7.9k points answer comment Share Follow 0 reply Please log in or register to add a comment.