Stain vs. Dye in Histology: Key Differences & Uses Explained
In histology, a stain is a chemical reagent that colors cellular structures by binding selectively, whereas a dye is the colored molecule itself—the active chromophore inside every stain. Think of dye as the ink, stain as the loaded pen. People swap the words because every stain contains dye, so “hematoxylin dye” sounds right even though…