This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pathology
Cells seen in MI at 48 hours are 
Select and explain. 
A. polymorphs, B. Fibroblasts, C. Lymphocytes, D. Macrophages
A: polymorphs
Answer: A: polymorphs 
Explanation: The microscopic appearance also undergoes a characteristic sequence of changes . Typical features of coagulative necrosis become detectable within 4 to 12 hours of infarction. "Wavy fibers" also can be present at the edges of an infarct. Light microscopic features in 1-3 days include: Coagulation necrosis with loss of nuclei and striations; interstitial infiltrate of neutrophils. (Robbins basic pathology,9th edition.pg no.380)