Congo Red Stain Kit is used to identify amyloid in tissue sections on Artisan Link and Artisan Link Pro Staining Systems. Amyloid is an abnormal protein product that can be found in various pathologic conditions. This stain demonstrates amyloid in pink to dark pink with light (bright field) microscopy or the characteristic apple green bi-refringence with polarized light. Mayer's Hematoxylin is used as a counterstain. This stain has been optimized with 8 µm thick tissue sections.