Intravital microscopy image from the liver of a mouse model: a platelet (turquoise) adheres to the inflamed vessel wall (yellow dashed outline) and sheds a long, filamentous membrane extension—a ...

Platelets are probably best known for their role in blood clotting, making scabs and related, if less salubrious, contributions to heart attacks and strokes. But these tiny, saucer-shaped blood cells ...