Microinjection of CRISPR/Cas9 into human embryos (VIDEO)

The Francis Crick Institute

Caption

This shows a human embryo on day one, before the pronuclei of the sperm and egg merge. CRISPR/Cas9 is injected into each pronucleus, editing them so that the gene responsible for the OCT4 protein does not function.

Credit

Dr Kathy Niakan/Nature

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