In Embryos, Crispr Can Cut Out Whole Chromosomes—That’s Bad

In the Cell paper, researchers led by Egli injected Crispr into human sperm from a donor with a blindness-causing mutation in a gene called EYS2 that resides on the long arm of chromosome 6. Once inside, Crispr made cuts at the site of the genetic glitch. The researchers didn’t add any new material to correct […]

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