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 ...

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 ...