Yep - you&#x27;re correct, bacteria do not have a nucleus either. I was swapping the words around to try and create a parallel sentence and I thought I had corrected &#x27;nuclei&#x27; to &#x27;genomes&#x27; in my edit, but apparently I did not.<p>&quot;there are 39 trillion separate non-human genomes in a human body, and only 5 trillion human nuclei.&quot;  And you&#x27;d be correct in pointing out that that sentence is also a little wonky.<p>Which is the best metric? Nuclei, cells, dividable cells, base pairs, non-redundant base pairs, protein-encoding base pairs, expressed human protein, mass, species, etc?<p>It&#x27;s difficult to get the nomenclature exactly parallel between mammalian and bacterial cells, much less fungal or viral material. But that&#x27;s also the point. It&#x27;s tricky to compare, and shouting that one comparison is <i>wrong</i> is just kind of click-baity.