This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Histopathological findings, Subject name: Dental
[{'content': 'Tzank cell is: \nSelect and explain. \nA. Neutrophil, B. Lymphocyte, C. Fibroblast, D. Keratinocytes', 'role': 'user'}, {'content': "Answer: D \nExplanation: Tzanck cells are acantholytic cell or acanthocytes formed due to separation of keratinocytes due to defect in desmosomes. Characterstic on tzank smear Acanthocytes Multinucleate Giant cells Dyskeratotic Keratinocyte Necrotic Keratinocyte Examples Pemphigus -Herpes -Chicken pox -Darier's disease -SJS/TEN", 'role': 'assistant'}]