Learn languages naturally with fresh, real content!

Popular Topics
Explore By Region
Scientists made human eggs from skin cells, a step toward helping infertile couples, but the eggs had genetic flaws and are not ready for use.
Scientists have created human eggs in the lab using skin cells, a breakthrough that could one day help infertile women and same-sex couples have genetically related children.
Led by Shoukhrat Mitalipov at Oregon Health & Science University, the team used a cloning technique similar to Dolly the sheep’s, replacing donor egg DNA with skin cell DNA and guiding development through a novel process called "mitomeiosis" to produce 82 functional eggs.
Some fertilized eggs reached the blastocyst stage, a key milestone, but all had genetic abnormalities preventing further development.
While the method is still experimental and far from clinical use, researchers call it a significant proof of concept.
Experts warn of major safety, ethical, and regulatory challenges, including risks of "designer babies," unauthorized DNA use, and genetic privacy violations, emphasizing that much more research is needed before any human application.
Los científicos hicieron óvulos humanos a partir de células de la piel, un paso para ayudar a parejas infértiles, pero los óvulos tenían defectos genéticos y no estaban listos para su uso.