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: Dental
Acantholytic cells in pemphigus is – 
Select and explain. 
A. Cell with hyperchromatic nuclei and perinuclear halo, B. Cell with hypochromatic nuclei and perinuclear halo, C. Multinucleated cells, D. None of the above
A: Cell with hyperchromatic nuclei and perinuclear halo
Answer: A: Cell with hyperchromatic nuclei and perinuclear halo 
Explanation: Tzanck cells (acantholytic cells) appear as round cells with central, dark, pyknotic, oval nucleus surrounded by pink, condensed cytoplasm, when stained with Giemsa or Leishman's stain.
In simple words Tzank cells are round cells with hyperchronzatic nuclei and perinuclear halo.