Blood - SEM

A three-dimensional ultrastructural image analysis of a T-lymphocyte (right), a platelet (center) and a red blood cell (left), using a Hitachi S-570 scanning electron microscope (SEM) equipped with a GW Backscatter Detector. (Description text from the Wikimedia Commons file page.)

Image courtesy of Electron Microscopy Facility at The National Cancer Institute at Frederick (NCI-Frederick), via Wikimedia Commons.