unique ferric lakes of hematein that produce deep blue-black stains; useful for studies of cytologic detail, such as chromosomes, spindle fibers, Golgi apparatus, myofibrils, and mitochrondria; also useful to demonstrate
Entamoeba histolytica.
See also:
Heidenhain iron hematoxylin stain,
Weigert iron hematoxylin stain.