Journal
BIOTECHNIC & HISTOCHEMISTRY
Volume 84, Issue 4, Pages 159-177Publisher
INFORMA HEALTHCARE
DOI: 10.1080/10520290903052899
Keywords
H & E; hematoxylin; hemalum; mordant; nuclei
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The hematoxylin and eosin stain is the most common method used in anatomic pathology, yet it is a method about which technologists ask numerous questions. Hematoxylin is a natural dye obtained from a tree originally found in Central America, and is easily converted into the dye hematein. This dye forms coordination compounds with mordant metals, such as aluminum, and the resulting lake attaches to cell nuclei. Regressive formulations contain a higher concentration of dye than progressive formulations and may also contain a lower concentration of mordant. The presence of an acid increases the life of the solution and in progressive solutions may also affect selectivity of staining. An appendix lists more than 60 hemalum formulations and the ratio of dye to mordant for each.
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