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Washington University Experience | NORMAL | Oligodendroglia | 1A3 Oligodendrocyte without halo (frozen unfixed section, Case 1) H&E 6 copy
However, frozen sections of unfixed material from an intraoperative smear ("frozen section" preparation) do not exhibit oligodendroglial halos (arrowheads) as shown in this image. A reactive astrocyte is identified with an arrow (H&E)
