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Super-precise new CRISPR tool could tackle a plethora of genetic diseases

The system allows researchers more control over DNA changes, potentially opening up conditions that have challenged gene-editors. Heidi Ledford For all the ease with which the wildly popular CRISPR–Cas9 gene-editing tool alters genomes, it’s still somewhat clunky and prone to errors and unintended effects. Now, a recently developed alternative offers greater control over genome edits — an advance...