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Die Feinstruktur und Differenzierung des inneren Segmentes und des Paraboloids der Photorezeptoren in der Retina von Hühnerembryonen

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Summary

The development of the inner segment of the chick photoreceptors has been studied from the 6th to 21st day of incubation.

The inner segment is essentially an elongation of the apical cytoplasm of the growing receptor, distally from the outer limiting membrane. An emigration of mitochondria follows, forming the ellipsoid.

The paraboloid is a portion of the agranular endoplasmic reticulum and occupies a sharply localised non variable position within the receptor.

Possible interrelatations between paraboloid, endoplasmic reticulum and Golgi apparatus are discussed. The presence of glycogen in the paraboloid seems to indicate that this specialised portion of e.r. may be either involved in glycolysis or a store for glycogen.

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Authors and Affiliations

  1. Institut für Histologie und experimentelle Neuroanatomie der Universität Göttingen, Deutschland

    K. Meller & W. Breipohl

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  1. K. Meller
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  2. W. Breipohl
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Die Verfasser danken der Deutschen Forschungsgemeinschaft und der Volkswagenstiftung für ihre Unterstützung, Fräulein Ch. Kiele und Fräulein E. Möhring für die technische Assistenz, Frau M. Bothe für das Diagramm.

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Meller, K., Breipohl, W. Die Feinstruktur und Differenzierung des inneren Segmentes und des Paraboloids der Photorezeptoren in der Retina von Hühnerembryonen. Zeitschrift für Zellforschung 66, 673–684 (1965). https://doi.org/10.1007/BF00339251

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  • DOI: https://doi.org/10.1007/BF00339251

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