The findings being illustrated here is:

1. A Luxol fast blue (LFB)-Periodic acid Schiff (PAS) stain.

2. The findings are compatible with a demyelinating process.

3. The cell indicated by the arrow is a macrophage.

4. There is no significant pathologic findings being illustrated.

A. I, 2, and 3 are true.

B. Only 1 and 3 are true.

C. Only 2 and 4 are true.

D. Only 4 is true.

E. None of the above.

Answer and Discussion

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