Which of the following are antigen-presenting cells?: (A) Neutrophils, (B) T-lymphocytes, (C) Macrophages, (D) Plasma cells
Answer is C. 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.