Some new cytological observations of the normal rat ependymal cell

A. Hirano, H. M. Zimmerman

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

The ependyma of the lateral ventricle of normal adult rats fixed by intravascular perfusion with either glutaraldehyde or formaldehyde was examined with the electron microscope. Three main observations of the normal ependymal cells were made which, to our knowledge, have not yet been reported. Ependymal cells were occasionally found directly abutting on blood vessels in the immediate vicinity. In this respect, they were very much like the well‐known perivascular astrocytes and tanycytes. This similarity was strengthened by the morphological details of the junctional areas. Bundles of the fine fibrils (app. 60 Å) were seen in the nuclei. They were devoid of any membranous boundary and were apparently identical to the fibrils often seen in the perinuclear cytoplasm. Microtubules, occasionally containing approximately 50 Å central densities, were consistently seen in the apical cytoplasm. They were apparently identical to the familiar microtubules constituting the cillary fine structure which also contained occasional central densities.

Original languageEnglish (US)
Pages (from-to)293-301
Number of pages9
JournalThe Anatomical Record
Volume158
Issue number3
DOIs
StatePublished - Jul 1967

ASJC Scopus subject areas

  • Anatomy
  • Agricultural and Biological Sciences (miscellaneous)

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