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: Social & Preventive Medicine
AIDS virus spreads in the body through (MHT-CET) 
Select and explain. 
A. Suppressor T-cells, B. Carrier T-cells, C. Helper T-cells, D. Killer T-cells
C: Helper T-cells
Answer: C: Helper T-cells 
Explanation: Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses.
They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.