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A series of colored, overlapping circles form Venn diagrams depicting the various genome categories represented by publicly available sequences in NCBI and IMG/M. Illustration of a microscope with a spotlight on yellow shapes, surrounded by molecular structures. Open book with circular representations of microbial genomes above, all against a green background close up of a needle in a haystack. (judyanded via Flickr CC BY NC 2.0) Jean-Marie Volland at Donner lab. EM image of Pseudomonas phage Pf, an inovirus infecting Pseudomonas hosts. Inovirus capsids are long flexible filaments visible here after sample concentration and precipitation. (Courtesy of J. Driver and P. Secor, University of Montana)