A human endothelial cell that was flown to the International Space Station and returned to Earth for analysis is helping researchers keep astronauts healthy in space.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/innerspace.jpg)
Source:
https://phys.org/news/2020-10-image-space-borne-human-endothelial-cell.html