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Digitale Medien

A blood-aqueous barrier to small molecules in the ciliary processes of the vervet monkey (Cercopithecus aethiops) (1972)

Vegge, Torgeir

Springer

Cell & tissue research 135 (1972), S. 483-499

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ISSN: 1432-0878

Schlagwort(e): Ciliary body ; Cercopithecus aethiops ; Intercellular junctions ; Bloodaqueous barrier ; Electron microscopy

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: Summary Sectors of anterior segments of vervet eyes were exposed to solutions of different osmolarities (Cercopithecus aethiops). After hypertonic incubation followed by isotonic fixation, as well as after fixation directly in hypertonic fixative, the ciliary epithelium showed constant changes. These changes consisted of a shrinkage pattern with dilations of intercellular clefts in the superficial region of the epithelium, whereas no dilations occurred in the basal layer. The basal junctional complex of the superficial cell layer was always intact. The detailed structure of this complex is described. The conclusion is drawn that it functions as a barrier to the molecules of the solutes in question, and that it may also have this function in vivo with regard to molecules of similar size.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00583432

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102

Digitale Medien

Studies of the fine structure of ovarian interstitial tissue (1972)

Dahl, Erik

Springer

Cell & tissue research 135 (1972), S. 553-561

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ISSN: 1432-0878

Schlagwort(e): Ovary ; Domestic fowl ; Thecal gland ; Postnatal evolution ; Electron microscopy

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: Summary The post-natal evolution of thecal gland in the domestic fowl has been explored, and a hypothesis for this development is proposed. It is suggested that the surface epithelium of the ovary forms crypts and submicroscopic clefts (ingrowing cords) which contribute with epithelial elements required for the regeneration of some of the ovarian elements, including the thecal glands. Complexes of these ingrowing epithelial cells are forming small islets which, after hormonal stimulation, are transformed into well defined structures, the thecal glands, with a specific function, viz. steroid bio-synthesis.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00583436

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