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  • 1
    Electronic Resource
    Electronic Resource
    Reversal of the Heart-beat in Tunicates (1953)
    [s.l.] : Nature Publishing Group
    Nature 172 (1953), S. 41-41 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] However, the most important aspect of the whole question has, I think, been adequately dealt with by von Skramlik1 in a very important paper which was not referred to in Haywood and Moon's (1950) original contribution. Von Skramlik not only followed the repeated reversal of isolated hearts of Ciona ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/172041a0
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  • 2
    Electronic Resource
    Electronic Resource
    Reversal of the Heart-beat in Tunicates (1952)
    [s.l.] : Nature Publishing Group
    Nature 170 (1952), S. 851-852 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] I have found rings of fusiform cells in the heart of Ciona intestinalis (L) which seem to correspond to those described by Hunter1, but they are connective tissue cells and not nerve cells, being the ends of sheets of connective tissue that line the large blood vessels at their cardiac junction. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/170851b0
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  • 3
    Electronic Resource
    Electronic Resource
    Growth Lines in the Larvae and Adults of Bivalve Molluscs (1968)
    [s.l.] : Nature Publishing Group
    Nature 217 (1968), S. 683-683 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In adults, growth lines are the outer edges of growth layers within the shell. The cyclic nature of these layers has been studied by Barker2, who concluded that the five orders of layers represented growth cycles with periods of approximately 6 h, 24 h, 15 days, 6 months and 1 yr. He suggested that ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/217683a0
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  • 4
    Electronic Resource
    Electronic Resource
    Structure of the Ascidian Octacnemus Moseley (1956)
    [s.l.] : Nature Publishing Group
    Nature 178 (1956), S. 703-704 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Octacnemus, the better-known genus, has in particular the following characters not found in other tunicates : (1) a crown of eight large triangular lobes on the upper side, (2) an upper and a lower cavity between the test and the body proper, (3) a horizontal membrane separating these two cavities ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/178703b0
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  • 5
    Electronic Resource
    Electronic Resource
    Abbreviated Pelagic Life of Chilean and New Zealand Oysters (1963)
    [s.l.] : Nature Publishing Group
    Nature 197 (1963), S. 512-513 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Elimination of the usually wasteful pelagic phase is biologically useful, particularly in the low temperature and strong tidal currents of areas like Foveaux Strait, New Zealand, where large oyster beds exist. The introduction of the New Zealand species to Britain could be commercially important, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/197512b0
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  • 6
    Electronic Resource
    Electronic Resource
    Spread of the Ascidian, Styela mammiculata Carlisle (1960)
    [s.l.] : Nature Publishing Group
    Nature 185 (1960), S. 862-862 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/185862b0
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  • 7
    Electronic Resource
    Electronic Resource
    Concretions in the Pyloric Gland of Ciona intestinalis (1949)
    [s.l.] : Nature Publishing Group
    Nature 164 (1949), S. 717-717 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] THE pyloric gland has long been known to exist in ascidians and is recognized to be of general occurrence in the tunicates with the exception of the Larvacea, but its function has not been determined with certainty. The organ usually forms a system of branching and anastomosing tubules ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/164717a0
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  • 8
    Electronic Resource
    Electronic Resource
    Oysters killed by Trematode Parasites (1963)
    [s.l.] : Nature Publishing Group
    Nature 197 (1963), S. 616-616 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Twenty-two of the oysters were fixed on arrival from Foveaux Strait, New Zealand, and showed 13-6 per cent parasitized. The remainder were kept in aquaria for 6 months and those that died were fixed and sectioned. Samples of living animals were also fixed and sectioned at intervals during the same ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/197616b0
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  • 9
    Electronic Resource
    Electronic Resource
    Bilateral Asymmetry Shown by the Metachronal Waves in Protochordate Gill Slits (1949)
    [s.l.] : Nature Publishing Group
    Nature 163 (1949), S. 137-138 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] MULLER1 stated that metachronal waves travelled round the gill slits of Amphioxus “am vordern Rande aufwarts, am hinten abwarts”; but he figured them moving in the opposite direction on the left side of the pharynx. Franz2 did not clear up the contradiction, though ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/163137a0
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  • 10
    Electronic Resource
    Electronic Resource
    Bacteria-free Culture of Oyster Larvae (1967)
    [s.l.] : Nature Publishing Group
    Nature 216 (1967), S. 1139-1140 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Hidu and Tubiash obtained bacteria-free fertilized eggs of M. mercenaries by repeatedly washing them in sterile ,sea water and the larvae wrere then maintained in aseptic conditions. In the absence of added algal food, however, there was little growth.. 0. edulis is larviparous, and in order to ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/2161139b0
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