Nature Research, Nature Reviews Microbiology, 11(9), p. 762-763, 2011
DOI: 10.1038/nrmicro2676
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It has been argued that the smaller viruses associated with giant DNA viruses are a new biological entity. However, Mart Krupovic and Virginija Cvirkaite-Krupovic argue here that these smaller viruses should be classified with the satellite viruses.