NCIt definition : A microscopy staining method that utilizes the Congo Red stain, a benzidine derivative
dye that has applications in staining biological structures, such as amyloid, as well
as a pH indicator.;
Alternative definition : CDISC: A microscopy staining method that utilizes the Congo red stain, a benzidine
derivative dye that stains amyloid and may also be used as a pH indicator.;