What color does Cresyl Echt Violet impart to Nissl substance?

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Multiple Choice

What color does Cresyl Echt Violet impart to Nissl substance?

Explanation:
Staining the rough endoplasmic reticulum in neurons hinges on a basic dye binding to the RNA-rich material inside the Nissl bodies. Cresyl Echt Violet is a basic dye, so it binds to the negatively charged ribosomal RNA in these granular bodies. The result is a blue to purple coloration of the Nissl substance, making the neuronal cell body stand out with distinct blue-to-purple granules where the rough ER is concentrated. This contrast helps visualize neuronal architecture and the distribution of Nissl bodies within the cell.

Staining the rough endoplasmic reticulum in neurons hinges on a basic dye binding to the RNA-rich material inside the Nissl bodies. Cresyl Echt Violet is a basic dye, so it binds to the negatively charged ribosomal RNA in these granular bodies. The result is a blue to purple coloration of the Nissl substance, making the neuronal cell body stand out with distinct blue-to-purple granules where the rough ER is concentrated. This contrast helps visualize neuronal architecture and the distribution of Nissl bodies within the cell.

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