sulforhodamine B


sul·fo·rho·da·mine B

(sŭl'fō-rō'dă-mēn), [C.I. 45100] A xanthene dye derivative; a fluorochrome used for tagging proteins by a sulfamido condensation; employed in immunofluorescence alone or in combination with fluorescein isothiocyanate for the simultaneous microscopic detection of two antigens in contrasting red and green colors. Synonym(s): lissamine rhodamine B 200