Biebrich scarlet is sometimes used as a plasma stain instead of Acid fuchsin in Masson's trichrome.
This dye should not be confused with the purified form of sudan III, referred to as biebrich scarlet R.
R. D. Lillie.
Conn's Biological Stains
Williams & Wilkins, Baltimore, MD., U.S.A.
Edward Gurr, (1971)
Synthetic dyes in biology, medicine and chemistry
Academic Press, London, England.
Aldrich chemical catalogue, 1992
Aldrich Chemical Company, Milwaukee, WI, USA.