PROGRESS IN IMMUNOLOGY: The Magic Molecule of Immunity? “It isn’t often that an entire field of medical science gets turned on its head. But it is becoming clear that immunology is undergoing a big rethink thanks to the discovery that antibodies, which combat viruses, work not just outside cells but inside them as well. The star of this new view is a protein molecule called TRIM21. . . . The significance of the group’s finding is just sinking in. It gives medicine a whole new angle on infection, and it just might crack the hitherto almost insuperable problem of how to cure viral infections, rather than just prevent them by vaccination.” Faster, please, as we like to say around here.