Which staining method is commonly used to visualize myelin in neural tissue?

• A. Luxol fast blue
• B. Hematoxylin and eosin
• C. Gram stain
• D. Wright stain

Answer: (A)

Staining methods for myelin rely on lipids in the myelin sheath. Luxol fast blue is the classic choice because it binds to lipid-rich myelin and stains it blue, making myelin sheaths stand out against the background. In practice, it’s often paired with a counterstain (like cresyl violet) to help visualize nearby neuronal cell bodies and tissue structure.

Hematoxylin and eosin highlights general tissue architecture and cell nuclei but is not selective for myelin, so demyelinated areas aren’t clearly distinguished. Gram stain targets bacteria, not neural lipids, so it’s not used for myelin visualization. Wright stain is designed for blood cells and bone marrow morphology, not neural myelin.

So, Luxol fast blue is the best choice for clearly visualizing myelin in neural tissue.