Chinese scientists claims to create world's first CRISPR babies

The transcript discusses the controversial use of CRISPR, a gene editing tool, by He Jiang Hui to create the first gene-edited babies. The process involved washing sperm, creating an embryo, and using CRISPR to remove the CCR5 gene, aiming to make the babies immune to HIV. He claims the procedure was successful, resulting in twin girls.

What was the age of the embryo when CRISPR was used?

What were the results of the gene surgery performed by Hood?