Fibrinogen, the abundant plasma protein best known for forming blood clots, may play a second and far less benign role during SARS-CoV-2 infection: acting as a molecular bridge that simultaneously hides the virus from neutralizing antibodies and delivers it to the cells lining blood vessels.
Source: [Phys.org](https://phys.org/news/2026-08-blood-clotting-protein-sars-cov.html)