1876. Hematoxilin-Eosin staining

Hematoxilin-Eosin stain is one of the principals stains in histology. Hematoxylin  colors nuclei of cells (and a few other objects, such as keratohyalin granules and calcified material) blue. The nuclear staining is followed by counterstaining with an aqueous or alcoholic solution of eosin Y, which colors other, eosinophilic structures in various shades of red, pink and orange.

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