This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Viral infections, Subject name: Dental
Multinucleate giant cells on Tzanck test are seen in all Except? 
Select and explain. 
A. Varicella, B. Herpes zoster, C. Pemphigus, D. Molluscum contagiosum
D: Molluscum contagiosum
Answer: D: Molluscum contagiosum 
Explanation: Tzanck test is popular for rapid identification of multinucleate giant cells, used for Herpes simplex infection which are not pathognomonic Also seen in varicella, herpes zoster and pemphigus. Diagnosis of herpes simplex infection depends on clinical suspicion suppoed by electron microscopy of fresh lesional fluid, DNA hybridization, immunofluorescence, PCR and viral culture For Molluscum contagiosum : Henderson Paterson inclusion bodies.