Kidney glomerulus. Coloured scanning electron micrograph (SEM) showing the surface of a glomerulus. This structure is encased in podocyte cells that have branching processes (pedicles, bright pink) that interlock. Below the surface, blood flows through the coiled capillary (pale red). The glomeruli filter waste products from the blood to form urine. Magnification: x370 when printed at 10 centimetres wide.