This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
Which is not a macrophage - 
Select and explain. 
A. Monocyte, B. Microglia, C. Kupffer cells, D. Lymphocytes
D: Lymphocytes
Answer: D: Lymphocytes 
Explanation: Macrophages take various forms (with various names) throughout the body (e.g., histiocytes, Kupffer cells, alveolar macrophages, microglia, and others), but all are pa of the mononuclear phagocyte system. Reff: Ananthanarayanan & Panikers textbook of microbiology 9th edition pg: 137