Figure 6. Electron microscopical image of decoy cells.

Figure 6

Electron microscopical image of decoy cells. The intranuclear viral inclusion bodies observed by light microscopy are ultrstructurally composed of densely packed viral particles (asterisk, arrows) with a diameter of approximately 40 nanometers. This is the typical size of viruses belonging to the “polyomavirus family”. Occasionally, polyomaviruses are arranged in crystalloid arrays (image on the right, arrows). Note: In rare cases decoy cells can contain adenovirus particles which can easily be identified by electron microscopy based on their large size of approximately 80 nanometers in diameter.

From: Urine Cytology Findings of Polyomavirus Infections

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