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 characteristic feature of apoptosis on light microscopy is - 
Select and explain. 
A. Cellular swelling, B. Nuclear compaction, C. Intact cell membrane, D. Cytoplasmic eosinophlia
B: Nuclear compaction
Answer: B: Nuclear compaction 
Explanation: Ans. is 'b' i.e., Nuclear compaction o The most characteristic feature of apoptosis is condensation of nuclear chromatin which corresponds to nuclear compaction (pyknosis) on light microscopy.