This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
Cell type which lacks HLA antigen is 
Select and explain. 
A. Monocyte, B. Thrombocytes, C. Neutrophil, D. Red blood cell
D: Red blood cell
Answer: D: Red blood cell 
Explanation: Harshmohan textbook of pathology 7th edition HLA system composed of antigenic proteins present on all nuclear cells of the body and platelets. Mature RBC which lack nucleus so devoid of HLA system. .