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: Surgery
Tissue graft rejection can be prevented by the suppression of 
Select and explain. 
A. Plasma antibodies, B. T-cells, C. Allergy producing mast cells and basophils, D. Macropghages
B: T-cells
Answer: B: T-cells 
Explanation: None