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REGRESSIVE STAINING. In a regressive stain, the tissue is first over stained and then partially decolorized. Differentiation is usually controlled visually by examination with a microscope. When regressive staining is employed, a sharper degree of differentiation is obtained than with progressive staining .
PROGRESSIVE STAINING. In progressive staining, once the dye is taken up by the tissue it is not removed. Differentiation in progressive staining relies solely on the selective affinity of dyes for different tissue elements. The tissue is left in the dye solution only until it retains the desired amount of coloration.
Wiki User
∙ 14y ago
Wiki User
∙ 11y agoRegressive staining is overstaining tissue and then differentiating (decolorizing).
Progressive staining is staining just until the desired intensity is reached there is no differentiating step for this stain
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