Two Chinese girls, who we'll call Lulu and Nana to protect their privacy, were born healthy a few weeks ago. Their mother Grace started her pregnancy by regular IVF with one difference: right after sending her husband's sperm into her eggs, an embryologist also sent in CRISPR/Cas9 protein and instructions to perform a gene surgery intended to protect the girls from future HIV infection. The surger
![About Lulu and Nana: Twin Girls Born Healthy After Gene Surgery As Single-Cell Embryos - YouTube](https://cdn-ak-scissors.b.st-hatena.com/image/square/b2675742cffca1bfbfb193ca55001ee475cfdd2d/height=288;version=1;width=512/https%3A%2F%2Fi.ytimg.com%2Fvi%2Fth0vnOmFltc%2Fhqdefault.jpg)