An important nuclear staining component of polychrome methylene blue. For use in Lillie's modified Nocht's method for paraffin sections and the NCCLS method for blood smears.Azure A chloride has been used for the staining of polyacrylamide gel to analyse the bovine lung heparin digestion by heparinase I. It has been used for the determination of the sulphated groups content in polysaccharides. An important nuclear staining component of polychrome methylene blue. For use in Lillie's modified Nocht's method for paraffin sections and the NCCLS method for blood smears. An important nuclear staining component of polychrome methylene blue