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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
CD4 cells are involved in all of the following processes, EXCEPT:
assistant
The correct answer is  CD4 cells or T cells, have all of the functions listed except for processing and presenting antigens. Ref: Kuby Immunology, 6th Edition, Page 209