Following our detailed protocol, Fluoro-Jade C labels degenerating neurons which are visualised with blue light excitation, while DAPI (not included) counter stains cell nuclei, visualised with ultra-violet illumination. The Fluoro-Jade C dye can be used on all kinds of preserved tissues, including fresh-frozen, paraformaldehyde or formalin fixed, and formalin fixed, paraffin-embedded tissues.