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FIG 3. Histopathologic examination of a specimen obtained from left lentiform nucleus by stereotactic biopsy. Hematoxylin and eosin staining shows two different types of cells: large atypical cells containing large, round, vesicular nuclei with irregular and pleomorphic nucleoli (tumor cells), and infiltrating lymphocytes (original magnification, x200). Placental alkaline phosphatase staining shows positive tumor cells (not shown).
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