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"Candidatus Nasuia deltocephalincola" was reported in 2013 to have the smallest genome of all bacteria, with 112,091 nucleotides. For comparison, the genome of Escherichia coli has 4.6 million nucleotides. The second smallest genome, from bacteria Tremblaya princeps, has 139,000 nucleotides. While N. deltocephalinicola has the smallest number of nucleotides,

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