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: Physiology
T-lymphocytes play a primary role in 
Select and explain. 
A. Production of Antibodies, B. Production	of	lymphokines	and	delayed hypersensitivity, C. Activation of complement system, D. Immediate Hypersensitivity
B: Production	of	lymphokines	and	delayed hypersensitivity
Answer: B: Production	of	lymphokines	and	delayed hypersensitivity 
Explanation: None