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The first virus isolates from Antarctic sea ice have complex infection patterns

Viruses are recognized as important actors in ocean ecology and biogeochemical cycles, but many details are not yet understood. The authors of this paper participated in a winter expedition to the Weddell Sea, Antarctica, to isolate viruses and to measure virus-like particle abundance (flow cytometry) in sea ice. They isolated 59 bacterial strains and the first four Antarctic sea-ice viruses known (PANV1, PANV2, OANV1 and OANV2), which grow in bacterial hosts belonging to the typical sea-ice genera Paraglaciecola and Octadecabacter.

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