Myelin is stained blue in this cross section of a rat hippocampus. Myelin, which speeds electrical signals flowing through axons, is produced by oligodendrocytes, which increase in number as a ...

A method for staining and embedding the entire mouse brain for electron microscopy is reported. The method results in uniform myelin staining and will allow reconstructions of myelinated long ...

In Panel A, light microscopy reveals myelin sheaths (dark blue rings) ... Two darker-staining oligodendrocytes, the cells that make and maintain myelin, lie to the right of center (arrow).