, it is important to annotate that the unexpected and apparently unexplainable viral vs human peptide matching most possibly derives from the central role played by viruses in the evolutionary origin of the eukaryotic nucleus, as described by the viral eukaryogenesis hypothesis [ 77 , 78 , 79 ].
This research received no specific grants from any funding agency in public, commercial, or not-for-profit sectors.
Competing interests : The author declares no conflicts.
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