50 years ago, chimeras gave a glimpse of gene editing’s future
Excerpt from the June 1, 1974 issue of Science News
![A chimera pig embryo](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2024/05/053124_aw_chimeras_feat.jpg?fit=1030%2C580&ssl=1)
Advances in genetic engineering over the last 50 years let scientists in 2023 introduce human stem cells into a pig embryo engineered to lack a kidney. The stem cells grew into a new organ made mostly from human cells.
J. WANG ET AL/CELL STEM CELL 2023