This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General, Subject name: Skin
[{'content': 'Acantholytic cells are seen in \nSelect and explain. \nA. Pemphigus vulgaris, B. Bullous pemphigoid, C. Cicatricial pemphigoid, D. Dermatitis herpetiformis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Pemphigus vulgarisHarrison 19th ed. / 370* The rounded keratinocytes with hyperchromatic nuclei and perinuclear halo (due to condensing of cytoplasm in periphery) are called acantholytic cells.* It is seen in case of pemphigus vulgaris* Acantholytic cells can be demonstrated in bed side Tzanck test.', 'role': 'assistant'}]