Légende : Nerve bundle. Light micrograph of a section through a nerve bundle from the sciatic nerve. Myelin sheaths (dark blue circles) can be seen surrounding the axons (light blue dots). Perineurium (connective tissue, light blue) surrounds the nerve bundle. Adipose (fat) cells (dark brown) surround the nerve bundle. Magnification: x200 when printed at 10 centimetres wide.