Results 91 to 100 of about 3,793 (125)
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DrosophilaP transposons of the urochordata Ciona intestinalis
Molecular Genetics and Genomics, 2009P transposons belong to the eukaryotic DNA transposons, which are transposed by a cut and paste mechanism using a P-element-coded transposase. They have been detected in Drosophila, and reside as single copies and stable homologous sequences in many vertebrate species.
Stefanie, Kimbacher +3 more
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Chemotactic Responses of Tunicate (Urochordata, Ascidiacea) Hemocytesin Vitro
Journal of Invertebrate Pathology, 1998A number of molecules were found to alter the motility of tunicate hemocytes. Bacterial lipopolysaccharide (LPS) significantly enhanced cell mobility relative to non-stimulated controls. Responses to LPS were not directional and so represented chemokinesis.
D A, Raftos, D L, Stillman, E L, Cooper
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1990
Abstract Hemichordates comprise worm-like Enteropneusta ( = Balanoglossida) and tentaculate Pterobranchia. Enter-opneusts have gill slits very like those of Amphioxus (Ch. 17) so are linked with chordates, particularly because they also have a dorsal, sometimes tubular, nerve cord in the collar (a short region just behind the mouth ...
E W Knight-Jones, J S Ryland
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Abstract Hemichordates comprise worm-like Enteropneusta ( = Balanoglossida) and tentaculate Pterobranchia. Enter-opneusts have gill slits very like those of Amphioxus (Ch. 17) so are linked with chordates, particularly because they also have a dorsal, sometimes tubular, nerve cord in the collar (a short region just behind the mouth ...
E W Knight-Jones, J S Ryland
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Pigmentation and tunic cells in Cystodytes dellechiajei (Urochordata, Ascidiacea)
Zoomorphology, 2001The tunic of Cystodytes dellechiajei (Poly- citoridae), a colony-forming species of the Ascidiacea that contains biologically active alkaloids, was investigated using light microscopy, laser-scanning microscopy and nuclear magnetic resonance techniques. The colonies contain numerous individual zooids, which are embedded in a common tunic. Each zooid is
Eva-Maria Rottmayr +2 more
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Sub-Phylum Tunicata (Urochordata)
1962Three main divisions of this ancient group have been recognised: (1) the sessile Ascidiacea, (2) the Thaliacea, and (3) the Appendicularia. Each has an organisation which, when taken as a whole, is ‘significantly unique in itself’ (Berrill). The tunicates are marine. The Ascidiacea are all sessile, whilst the other two groups are pelagic.
T. Jeffery Parker, William A. Haswell
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A Protozoan Parasite of Molgula manhattensis (De Kay) (Urochordata)
Nature, 1966DURING the course of an investigation into oogenesis in the ascidian Molgula manhattensis a protozoan was discovered parasitizing a few of the nearly mature and fully mature eggs of one gonad. The ascidian which contained the infected gonad was one of several of the same species taken from Plymouth Sound in June 1963.
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The morphology of allograft rejection in Styela plicata (Urochordata: Ascidiacea)
Cell and Tissue Research, 1990This study identifies three discrete processes responsible for the rejection of tunic tissue transplanted between individuals of the solitary ascidian Styela plicata. The first stage of rejection is characterized by the destruction of blood vascular components within incompatible allografts.
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Development Genes and Evolution, 2001
Appendicularia (Larvacea) is a subgroup of Urochordata (Tunicata) comprised of holoplanktonic organisms that retain their tailed architecture throughout their life history, while other tunicates, including ascidians and doliolids, resorb the tail after metamorphosis.
A, Nishino +3 more
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Appendicularia (Larvacea) is a subgroup of Urochordata (Tunicata) comprised of holoplanktonic organisms that retain their tailed architecture throughout their life history, while other tunicates, including ascidians and doliolids, resorb the tail after metamorphosis.
A, Nishino +3 more
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Molecular Ecology, 2002
AbstractThe large sessile tunicatePyura stolonifera(Pleurogona: Stolibranchiata: Pyuridae), has been regarded as a complex taxon with disjointed distributions, including Australia (Pyura stolonifera praeputialis), South Africa (Pyura stolonifera stolonifera) and South America (Chile, Antofagasta:Pyurasp., the ‘piure de Antofagasta’), and has been cited
Castilla, J. C. +4 more
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AbstractThe large sessile tunicatePyura stolonifera(Pleurogona: Stolibranchiata: Pyuridae), has been regarded as a complex taxon with disjointed distributions, including Australia (Pyura stolonifera praeputialis), South Africa (Pyura stolonifera stolonifera) and South America (Chile, Antofagasta:Pyurasp., the ‘piure de Antofagasta’), and has been cited
Castilla, J. C. +4 more
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Developmental & Comparative Immunology, 2012
Allorecognition, distinguishing self from non-self allogeneic tissues is the underlying basis of innate immunity. In the colonial tunicate Botryllus schlosseri this historecognition is governed at a single genetic locus, Fu/HC (for fusibility/histocompatibility), with hundreds of co-dominantly expressed alleles.
Buki, Rinkevich +3 more
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Allorecognition, distinguishing self from non-self allogeneic tissues is the underlying basis of innate immunity. In the colonial tunicate Botryllus schlosseri this historecognition is governed at a single genetic locus, Fu/HC (for fusibility/histocompatibility), with hundreds of co-dominantly expressed alleles.
Buki, Rinkevich +3 more
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