This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
All of the following are functions of CD4 helper cells EXCEPT: September 2012 
Select and explain. 
A. Immunogenic memory, B. Produce immunoglobulins, C. Activate macrophage, D. Activate cytotoxic cells
B: Produce immunoglobulins
Answer: B: Produce immunoglobulins 
Explanation: Ans. B i.e. Produce iinmunoglobulins B cells divide and transforms into plasma cells which synthesize immunoglobulin. T cells produce activation products (lymphokine) and induce cell mediated response