A Genetic Curse, a Scared Mom, and the Quest to ‘Fix’ Embryos
Danielle Messer carried a mitochondrial mutation that left her son severely disabled. Before even daring another pregnancy, she tracked down
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Embryos
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
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