CRISPR tools found in thousands of viruses could boost gene editing
Phages (seen here attacking a bacterial cell) might use CRISPR-Cas systems to compete with one another — or to manipulate gene activity in their hosts.Credit: Biophoto Associates/SPL A systematic sweep of viral genomes has revealed a trove of potential CRISPR-based genome-editing tools. CRISPR-Cas systems are common in the microbial world of bacteria and archaea, where …
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