Lab-grown sperm: scientists inch closer to fertility breakthrough Skip to main content Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In...
Key Takeaways
- Lab-grown cells stopped developing at an immature stage
- But the latest feat is a step in the right direction
- Around 40% of male-infertility cases have no known cause