What term refers to the staining pattern where a green dye stains the tissue green?

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Multiple Choice

What term refers to the staining pattern where a green dye stains the tissue green?

Explanation:
The pattern described is orthochromasia. In orthochromasia the tissue takes up the dye and shows the same color as the dye itself, so a green dye colors the tissue green. Metachromasia would involve a color change caused by tissue components, such as a dye that normally stains blue turning purple or pink upon binding. A counterstain provides contrast with a second stain, not a change in the primary dye’s color, and an accentuator increases staining intensity rather than describing a color pattern. Since the tissue remains green like the dye, orthochromasia is the correct term.

The pattern described is orthochromasia. In orthochromasia the tissue takes up the dye and shows the same color as the dye itself, so a green dye colors the tissue green. Metachromasia would involve a color change caused by tissue components, such as a dye that normally stains blue turning purple or pink upon binding. A counterstain provides contrast with a second stain, not a change in the primary dye’s color, and an accentuator increases staining intensity rather than describing a color pattern. Since the tissue remains green like the dye, orthochromasia is the correct term.

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