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Medical Definition of Stains-all
1. 4,5,4',5'-Dibenzo-3,3'-diethyl-9-methylthiocarbocyanine bromide;a dye that stains phosphoproteins blue, proteins red, nucleic acids purple, and mucoproteins and mucopolysaccharides various colours on acrylamide gels; also used on tissue sections. (05 Mar 2000)