加齢ラットの小脳髄膜に発生した顆粒細胞腫の1例

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  • Granular cell tumor in the cerebellar meninx of an aged rat.
  • 加齢ラットの小脳髄膜に発生した顆粒細胞腫の1例(短報)〔英文〕
  • カレイ ラット ノ ショウ ノウズイ マク ニ ハッセイシタ カリュウ サイボ

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A granular cell tumor was found in the leptomeninges of the cerebellar vermis of a male 21-month-old Wistar rat. Histologically, the neoplastic cells which proliferated in sheet and nest fashions frequently showed pleomorphic contour and contained PAS-positive granules in their cytoplasm. Ultrastructurally, the tumor cells had the characteristics of a granular cell tumor. Electron-dense bodies in the cytoplasm of the tumor cells sometimes contained a few rough endoplasmic reticula and ribosomes. Some junctional complexes were present between two adjacent cells.

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