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Sorek Lab

Academic research lab

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Bacteria's expanding antiviral arsenal

New Capabilities

Drove the systematic discovery of new defense systems

For billions of years bacteria have fought viruses. Until 2018, scientists could name only a handful of the tools they useโ€”mostly restriction enzymes and CRISPR. The catalog has since grown to more than 150 defense systems, and on April 23 Nature added another: Clover, a bacterial system that starves invading viruses of DNA building blocks without poisoning the bacterium itself.

Updated 2 hours ago