The tissue component stained blue-black in the image is which?

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Multiple Choice

The tissue component stained blue-black in the image is which?

Explanation:
Blue-black staining highlights myelin because Luxol fast blue binds to the lipids in the myelin sheath, producing a deep blue color in myelinated fibers. This makes white matter stand out against background tissue. Nuclei would take up a nuclear stain and appear blue or purple, not as a blue-black sheath; mitochondria aren’t specifically stained by this method, and axons themselves aren’t defined by this color unless they are myelinated. So the blue-black component is the myelin sheath around axons.

Blue-black staining highlights myelin because Luxol fast blue binds to the lipids in the myelin sheath, producing a deep blue color in myelinated fibers. This makes white matter stand out against background tissue. Nuclei would take up a nuclear stain and appear blue or purple, not as a blue-black sheath; mitochondria aren’t specifically stained by this method, and axons themselves aren’t defined by this color unless they are myelinated. So the blue-black component is the myelin sheath around axons.

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