<prompt> The Tzanck test, which aids in the diagnosis of herpes simplex infection, is a search for:Intracytopiasmic inclusion bodiesKoilocvtic cellsVirus shedding from pustular lesionsMulti nucleated giant cells  <response>: Ans: D Multi nucleated giant cells Ref: Jawetz, Melnick Adelbergs. Textbook of Medical Microbiology, 25th Edition. 2010. Pg. 456Explanation:Tzanck test is done to demonstrate tbe multinucleated giant cells in smears of scrapings or swabs of the base of vesicles in patients with herpes simplex infection.The multinucleated giant cells are absent in nonherpetic vesicles. 