Eukaryotic flagella. 1-axoneme, 2-cell membrane, 3-IFT (IntraFlagellar Transport), 4-Basal body, 5-Cross section of flagella, 6-Triplets of microtubules of basal body.
<a href="//commons.wikimedia.org/wiki/User:Franciscosp2" title="User:Franciscosp2">Franciscosp2</a>
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<span class="int-own-work" lang="en">Own work</span>