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: Dental
Which of the following are antigen-presenting cells? 
Select and explain. 
A. Neutrophils, B. T-lymphocytes, C. Macrophages, D. Plasma cells
C: Macrophages
Answer: C: Macrophages 
Explanation: Neutrophils are one of the primary defense cells of the innate immune system. T-lymphocytes are important activators of the specific (adaptive) immune system. Macrophages are antigen presenting cells. Plasma cells produce antibodies.