CD4 cells are involved in all of the following processes, EXCEPT:: (A) Acting as a helper function for B cells, (B) Processing and presenting antigens, (C) Producing and releasing interleukin-2, (D) Producing and releasing interferon-gamma
Answer is B. CD4 cells or T cells, have all of the functions listed except for processing and presenting antigens. Ref: Kuby Immunology, 6th Edition, Page 209