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Washington University Experience | MYELIN (IMMUNE-MEDIATED) | MS - Tumefactive | 3B3 MS, Tumefactive (Case 3) NF WM
The neurosurgical biopsy specimen is shown stained for axons which are largely preserved in areas which are totally demyelinated. The working definition of demyelination is preferential loss of myelin with relative preservation of axons (NF IHC).