Once embedded, tissues are cut into thin sections ready to be placed on a slide.

Histological staining involves the use of dyes to highlight specific intra- or extracellular elements within tissue.

To preserve and support a stained section for light microscopy, it is mounted on a clear glass slide, and covered with a thin glass coverslip.

Light microscopy makes use of primarily two detection systems for immunohistochemistry - fluorescence and enzyme labeling, while electron microscop