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True ependymal rosettes x400 wit

True ependymal rosettes x400 wit
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This is an H&E preparation of an ependymoma. Note the 2 rosettes in this image. These are true rosettes: formations of cells creating a central lumen. These are more specific for ependymomas than are pseudorosettes, but rosettes do not occur as frequently as pseudorosettes.
The unnecessarily large green arrow points to the central lumen of a rosette.

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