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Scientists create first genetically modified human embryo
For the first time in history, a team of researchers have successfully edited the genes of a human embryo. The researchers from Sun Yat-sen University in Guangzhou reportedly used the CRISPR/Cas9 technique to knock a gene called HBB, which causes the fatal blood disorder β-thalassaemia, out of donor embryos. This marks the first time that the CRISPR technique has been employed on an embryonic human genome. The CRISPR/Cas9 method utilizes a complex enzyme (aka a set of "genetic scissors") to snip out and replace faulty gene segments with functional bits of DNA. The technique is well-studied in adult cells, but very little published research has been done using embryonics. And it's the latter application that has bioethicists up in arms.
