Acta Neuropathologica

, Volume 32, Issue 3, pp 257–267 | Cite as

Plasma membrane structures of medulloblastoma and cerebellar sarcoma

  • Eiichi Tani
  • Tatsuo Morimura
  • Keizo Kaba
  • Noboru Higashi


Three medulloblastomas and 1 cerebellar sarcoma were studied on their plasma membrane structures. The average number of membrane particles per μm2 plasma membrane was 710 on face A and 70 on face B of medulloblastoma and 1280 on face A and 160 on face B of cerebellar sarcoma. The membrane particles were often aggregated in medulloblastoma and diffusely scattered in cerebellar sarcoma. Small gap junctions were occasionally found in cerebellar sarcoma and not evident in medulloblastoma. Round membrane protrusions, about 0.5–0.6 μ in diameter and provided with several small depressions on their foot, were often observed in region of narrow perinuclear cytoplasm of cerebellar sarcoma and different in structure from cytoplasmic processes. The present series is too limited in number to allow a definite conclusion, but indicates that the plasma membrane structures are different in medulloblastoma and cerebellar sarcoma.

Key words

Medulloblastoma Cerebellar Sarcoma Plasma Membrane Membrane Particles Freeze-Fracture 


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Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • Eiichi Tani
    • 1
    • 2
  • Tatsuo Morimura
    • 1
    • 2
  • Keizo Kaba
    • 1
    • 2
  • Noboru Higashi
    • 1
    • 2
  1. 1.Department of NeurosurgeryHyogo College of MedicineHyogoJapan
  2. 2.Institute for Virus ResearchKyoto UniversityKyotoJapan

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