Newfound ‘obelisks’ join viruses, viroids as third unusual life form
For nearly seven decades since their discovery in 1898, viruses were the only organisms at the boundary between the living and the non-living. Their obligate host dependence, parasitism, and small genome sizes collectively made sure they weren’t classified as ‘life’per se. Each virion is composed of a nucleic acid (DNA or RNA) core that serves…
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