<i>Entamoeba histolytica</i> quadrinucleate cyst with chromatoid bodies. The nucleus looks like a "ring and dot" - peripheral chromatin and central karyosome.
<a href="//commons.wikimedia.org/wiki/User:Navaho" title="User:Navaho">Stefan Walkowski</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>