While regeneration has long been the domain of colonial tunicates, a solitary species of sea squirt was able to regenerate into multiple, fully functional individuals within a month of being cut up.
A study has sparked controversy by suggesting that cells made using a popular lab protocol have been misidentified, with potentially serious repercussions for brain research. Critics say the significance of the findings has been overstated.
Two coauthors of a new study discuss their findings about nearly 170 facilities in the southwestern US selling unproven therapies—and what should be done about them.