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Ewing Sarcoma : CD99

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Bone_EwingSarcoma1_CD99_Resized.jpg

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Expression of CD99 (013; HBA71; MIC2) - cell membrane protein - is consistently seen in ES/PNET; however it is not specific and may also be seen in embryonal rhabdomyosarcoma, other sarcomas, and lymphoblastic lymphoma. Image courtesy of Dr. Jean-Christophe Fournet, Paris, France; humpath.com

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