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Giant virus discovery could rewrite the origin of complex life
General • February 19, 2026
A giant virus
discovered in Japan is
adding fuel to the provocative idea that
viruses helped create complex life. Named ushikuvirus, it infects amoebae and shows unique traits that connect different families of giant DNA viruses. Its unusual way of hijacking and disrupting the host cell’s nucleus offers fresh insight into how viruses may have influenced the evolution of the cell nucleus itself. The finding deepens the mystery of viruses—and their possible role in life’s biggest leap.
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