Submicroscopic Structure of the Carp Erythrocyte as Revealed by Electron Microscopy

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  • Yasuzumi G.
    Department of Anatomy, Nara Medical College, Naiaken, and Department of Anatomy, Medical School, Osaka University
  • Higashizawa S.
    Department of Anatomy, Nara Medical College, Naiaken, and Department of Anatomy, Medical School, Osaka University

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1. The submicroscopic structure of the carp erythrocyte has been studied on ultrathin sections. The material was fixed in buffered (pH 7.4) osmium tetroxide solution and embedded in n-butyl methacrylate.<br>2. The osmiophilic body in the cytoplasm seems to be the Golgi apparatus which is connected with the nucleus and cell membrane through the tubule.<br>3. The nucleus surface is characterized by drumstick-like processes protruding into the cytoplasm.<br>4. The nuclear membranes are observed as double layers, a porous external one and a compact internal one.<br>5. The heterochromatin appears as dense bodies attached to the coiled euchromatic threads.<br>6. The metabolic chromosome in the carp erythrocyte nucleus is composed of coiled filaments with a pitch of 20-40mμ and a width of 10-20mμ.

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