Find the INCORRECT combination.

1.	Find the INCORRECT combination.
A.	Surface immunoglobulins B cell antigen receptor
B.	Affinity maturation isotype switching
C.	Fc region of antibodies binding to complement proteins
D.	Spleen, the secondary lymphoid organ no connection with the lymphatic system
Answer» C. Fc region of antibodies binding to complement proteins

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Find the INCORRECT combination.

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