Eosin Y 1% Alcoholic is a cytoplasmic stain that when used in the hematoxylin and eosin staining procedure provides excellent definition of cell components in shades of red and pink. It is an excellent cytoplasmic stain which provides great contrast to the purple nuclei stained with hematoxylin. Intensified Eosin and Eosin-Phloxine have been formulated to provide the user with increased definition of the cytoplasmic components. These innovative modified eosin counterstains are substituted for Eosin Y 1% Alcoholic in the staining procedure. Timing may be varied to achieve the desired staining intensity. FDA approved for in vitro diagnostic use.