By Alison Abbott – Nature –
Our immune system falters over time, which could explain the negative effects of ageing.
Stem-cell researcher Carolina Florian didn’t trust what she was seeing. Her elderly laboratory mice were starting to look younger. They were more sprightly and their coats were sleeker. Yet all she had done was to briefly treat them — many weeks earlier — with a drug that corrected the organization of proteins inside a type of stem cell.
