Type of Preparation: Conventional Magnification: Low Interpretation: NILM: Cellular changes consistent with Herpes simplex virus Cytomorphologic Criteria: Dense intranuclear inclusions which are often eosinophilic, surrounded by a halo or clear zone. Multinucleation is also present. Explanatory Notes: Multinucleated cells and inclusions are not always seen. Nuclei with "ground-glass" features are the most common change identified with Herpes.