Results 141 to 150 of about 2,363 (170)
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Journal of Comparative Physiology ? A, 1981
Electron-microscopic examination shows that the rhabdomeres of the visual cells ofMusca domestica twist in the manner typical ofCalliphora erythrocephala andDrosophila melanogaster. More-over, it can be demonstrated that the rhabdomere section shown by Ribi (1979, Fig. 2) is from a twisting rhabdomere.
Ulrich Smola, Hansj�rg Wunderer
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Electron-microscopic examination shows that the rhabdomeres of the visual cells ofMusca domestica twist in the manner typical ofCalliphora erythrocephala andDrosophila melanogaster. More-over, it can be demonstrated that the rhabdomere section shown by Ribi (1979, Fig. 2) is from a twisting rhabdomere.
Ulrich Smola, Hansj�rg Wunderer
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Twisted rhabdomeres in the dipteran eye
Journal of Comparative Physiology ? A, 1979The rhabdomeres of the visual cells in the blowflyCalliphora erythrocephala and the fruit flyDrosophila melanogaster are twisted along their long axes.
U. Smola, H. Tscharntke
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Journal of Neurogenetics, 1991
In the Drosophila compound eye, the photoreceptor cells are organized in highly precise units, the ommatidia. In each photoreceptor cell, the primary photopigment, opsin, is contained in the rhabdomere, an ordered array of densely packed microvilli. A genetic and phenotypic analysis of a new X-linked. P element-induced mutation, fur, (fused rhabdomeres)
A, Blake +4 more
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In the Drosophila compound eye, the photoreceptor cells are organized in highly precise units, the ommatidia. In each photoreceptor cell, the primary photopigment, opsin, is contained in the rhabdomere, an ordered array of densely packed microvilli. A genetic and phenotypic analysis of a new X-linked. P element-induced mutation, fur, (fused rhabdomeres)
A, Blake +4 more
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Direkte Beobachtung der Rhabdomere bei Calliphora erythrocephala (Meig.)
Zeitschrift f�r Vergleichende Physiologie, 1969Betrachtet man mit einem Mikroskop mittlerer Apertur eine Bildebene im Komplexauge, so kann man bei antidromer Beleuchtung bei Calliphora erythrocephala am intakten Auge innerhalb eines groseren Bereichs gleichzeitig die Rhabdomere eines jeden Ommatidiums deutlich in Form eines virtuellen, aufrechten und vergroserten Bildes sehen.
R. Gemperlein, M. J�rvilehto
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The paracrystalline structure of an insect rhabdomere (Calliphora erythrocephala)
Cell and Tissue Research, 1987By use of a modified fixation technique, the receptor cells of the compound eye of the blowfly Calliphora erythrocephala were found to contain a regular, paracrystalline array of alternating rows of hexagonally shaped microvilli. The receptor cells R1 to R6 have a cell-specific number of microvilli per row in a cross section.
Stephan el-Gammal +2 more
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A labile, Ca2+-dependent cytoskeleton in rhabdomeral microvilli of blowflies
Cell and Tissue Research, 1982Rhabdomeral microvilli of photoreceptors of the blowfly Lucilia are shown to contain a cytoskeleton. An axial filament (∼ 6–11 nm) in each microvillus is inserted into a terminal cap distally, and into a plug filling the narrow neck of the microvillus proximally.
A D, Blest, S, Stowe, W, Eddey
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Rhabdomeric Ocellus in a Chiton
Nature, 1969IT has long been known that certain chitons (Mollusca, Polyplacophora) possess eyes or ocelli1. These ocelli occupy a unique position, being set dorsally in the outer most layer of the shell. No eyes from the soft parts of adult animals have yet been described2. Light microscope investigations distinguished several types of organelles within the shell.
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A photostable pigment within the rhabdomere of fly photoreceptors no. 7
Journal of Comparative Physiology ? A, 1978The population of the centrally located rhabdomeres no. 7 in the ommatidia of flies (Musca, Calliphora, Drosophila) is inhomogeneous: approximately 2/3 of them contain — besides a photoisomerizable rhodopsin — a photostable pigment. Its extinction spectrum has a maximum at 460 nm and two shoulders at 430 and 485 nm respectively.
Kirschfeld, K. +2 more
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Regulation of Rhodopsin Expression in Rhabdomeral Photoreceptors
1998Regulation of rhodopsin synthesis may occur at any of the biochemical steps required to transform the genetic information encoded in the opsin genes into the light-absorbing visual pigment, rhodopsin, contained in the photoreceptive membrane. These steps include the transcription of the opsin gene into mRNA, the translation of this mRNA into the opsin ...
Armin Huber, Reinhard Paulsen
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Phagocytosis of rhabdomeral membrane by crab photoreceptors (Leptograpsus variegatus)
Cell and Tissue Research, 1983Many crabs possess fused rhabdoms which are partly broken down at dawn and re-synthesised at dusk. The cross-sectional area of the rhabdom is therefore smaller during the day than at night. The only previously described mechanism of membrane removal from the rhabdomere in Crustacea involves the formation of pinocytotic vesicles at the bases of the ...
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