Cresyl Echt Violet staining performed at acidic pH restricts staining to DNA and RNA containing structures and appears how macroscopically?

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Multiple Choice

Cresyl Echt Violet staining performed at acidic pH restricts staining to DNA and RNA containing structures and appears how macroscopically?

Explanation:
The staining at acidic pH is highly selective for nucleic acids, so Cresyl Violet binds mainly to DNA- and RNA-containing structures, producing a purple appearance in the stained microscopic sections where those components are present. But this color change is visible only in thin sections viewed under a microscope; at the gross (macroscopic) level, the tissue does not pick up color from this microscopic stain. Therefore, the tissue would appear unstained when examined macroscopically.

The staining at acidic pH is highly selective for nucleic acids, so Cresyl Violet binds mainly to DNA- and RNA-containing structures, producing a purple appearance in the stained microscopic sections where those components are present. But this color change is visible only in thin sections viewed under a microscope; at the gross (macroscopic) level, the tissue does not pick up color from this microscopic stain. Therefore, the tissue would appear unstained when examined macroscopically.

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