NEW YORK, May 21 – Researchers from the University of Pittsburgh announced Wednesday the sequencing of the largest known virus, a bacteriophage known as “G,” according to a statement issued by the American Society for Microbiology, which is meeting this week in Washington, DC.

G is a virus that infects bacteria and contains 684 genes, 67 protein coding open reading frames, and 17 tRNA genes, the researchers have determined.

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