Bacterial pair reportedly cleared tumors in mice without immune-system help

A post describes a mouse study in which an intravenously injected pair of naturally occurring bacteria cleared tumors, including in mice with weakened immune systems. The proposed mechanism involves bacteria preferentially colonizing tumors to trigger clotting and tissue death. The post cautions that live bacteria may pose infection risks in people and that clotting outside tumors could be dangerous. Whether the approach works safely in humans remains unknown.