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
[{'content': "'Row of tombstones ' appearance is seen in \nSelect and explain. \nA. Irritant dermatitis, B. Pemphigus, C. Pemphigoid, D. Harpes zoster", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Pemphigus o The Suprabasal acantholytic blister is characteristic of pemphigus vulgaris. The single layer of intact basal cells that forms the blister base has been likened to a row of tombstones.", 'role': 'assistant'}]