Stanford scientists discover an immune cell that explodes to kill threats
Researchers at Stanford University have discovered a previously unknown immune cell in regenerative flatworms that destroys nearby threats by exploding within minutes. The study, published in Cell on June 2, 2026, identifies the cells as “ruptoblasts” and describes a rapid self-destruct process called ruptosis. The finding came from planarian flatworms, tiny animals famous for rebuilding…








