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  1. 0 資料タイプ別
  2. 03 紀要論文
  1. 250 大学院医歯学総合研究科(医)
  2. 20 紀要
  3. 01 Acta medica et biologica
  4. Vol.42 No.2

Scanning Electron Microscopic Study of Rat Ameloblasts during Enamel Maturation

http://hdl.handle.net/10191/33242
http://hdl.handle.net/10191/33242
a4c0a5fd-d5e2-494d-9dfd-b8df1c160433
名前 / ファイル ライセンス アクション
42(2)_63-70.pdf 42(2)_63-70.pdf (2.8 MB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2015-09-04
タイトル
タイトル Scanning Electron Microscopic Study of Rat Ameloblasts during Enamel Maturation
タイトル
タイトル Scanning Electron Microscopic Study of Rat Ameloblasts during Enamel Maturation
言語 en
言語
言語 eng
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
著者 Kishino, Masaru

× Kishino, Masaru

WEKO 53242

Kishino, Masaru

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Hamada, Takeshi

× Hamada, Takeshi

WEKO 53243

Hamada, Takeshi

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Inoue, Takao

× Inoue, Takao

WEKO 53244

Inoue, Takao

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内容記述タイプ Abstract
内容記述 The distal surface of rat incisor ameloblasts at the early stage of enamel maturation was investigated by high resolution scanning electron microscopy (SEM). Specimens were fixed by perfusion with 0.5% formaldehyde and 0.5% glutaraldehyde followed by decalcification, then freeze-cracked and treated with dilute osmium tetroxide to digest the dense lamina lining the distal surface of the ameloblasts. In this preparation, the unobscured distal surface was clearly demonstrated three-dimensionally under SEM. The following three types of ameloblasts were identified based on their ultrastructural features: ruffle-ended ameloblasts (RA); smooth-ended ameloblasts (SA); and transitional ameloblasts (Ruffle- to smooth-ended ameloblasts, R-SA). The surface of the RA was characterized by a complex labyrinth formed by protrusions and invaginations of the plasma membrane. In the RA and R-SA, microfibrils connecting the protrusions of the plasma membrane were observed on the distal surface. In these ameloblasts, small granules, presumably connecting the dense lamina to the distal surface of the ameloblasts, were also visible. The distal surface of SA was smooth, and no granular substances were visible on it. Mitochondria accumulated under the distal cell surface or the ruffle border. The surface structures of the R-SA displayed a pattern intermediate between those of the RA and SA. SA were distributed as several band-like structures at the stage of enamel maturation. These structural differences of the ameloblasts appeared closely related to enamel maturation.
書誌情報 Acta medica et biologica
en : Acta medica et biologica

巻 42, 号 2, p. 63-70, 発行日 1994-06
出版者
出版者 Niigata University School of Medicine
ISSN
収録物識別子タイプ ISSN
収録物識別子 05677734
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA00508361
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Kishino, Masaru, Hamada, Takeshi, Inoue, Takao, 1994, Scanning Electron Microscopic Study of Rat Ameloblasts during Enamel Maturation: Niigata University School of Medicine, 63–70 p.

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