June 1969
Volume 8, Issue 3
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Articles  |   June 1969
Atypical Mitochondria in the Ellipsoid of the Photoreceptor Cells of Vertebrate Retinas
Author Affiliations
  • TOYOKO ISHIKAWA
    Department of Anatomy, Faculty of Medicine, Kyushu University Fukuoka, Japan
  • EICHI YAMADA
    Department of Anatomy, Faculty of Medicine, Kyushu University Fukuoka, Japan
Investigative Ophthalmology & Visual Science June 1969, Vol.8, 302-316. doi:
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      TOYOKO ISHIKAWA, EICHI YAMADA; Atypical Mitochondria in the Ellipsoid of the Photoreceptor Cells of Vertebrate Retinas. Invest. Ophthalmol. Vis. Sci. 1969;8(3):302-316.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

The fine structure of ellipsoids in a number of vertebrate retinas was studied in material prepared with various fixatives. Several atypical ellipsoidal mitochondria were found in ellipsoids of certain animals. A peculiar configuration of the internal mitochondrial membranes caused by fusion of the outer surfaces of adjacent cristae teas found in the lamprey retina. Intramitochondrial glycogen granules and granular or filamentous intracristal inclusions were observed in the toad and giant salamander, respectively. In photoreceptor cells of the gecko, carp, and snake, the ellipsoid was particularly differentiated, containing modified mitochondria. The possible functional significance of such differentiated ellipsoids is discussed briefly with respect to the oil droplets.

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