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: Pathology
The cells seen after 72 hours in the infarcted area hi MI are - 
Select and explain. 
A. Neutrophils, B. Lymphocytes, C. Macrophages, D. Monocytes
C: Macrophages
Answer: C: Macrophages 
Explanation: Ans. is 'c' i.e., MacrophagesAcute inflammatory reaction with a predominance of Neutrophils is seen upto 2-3 days.After 3 days (i.e. after 72 hours), Macrophages become the predominant cell type and become involved in removal of necrotic debris.