Results 131 to 140 of about 3,861 (176)
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Toxicon, 1993
A wide range of toxins with interesting pharmacological properties have been isolated from ascidians. These include cyclic peptides, one of which, didemnin B, is undergoing clinical trials for cancer chemotherapy and is also a powerful immunosuppressive agent.
D J, Watters, A L, Van Den Brenk
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A wide range of toxins with interesting pharmacological properties have been isolated from ascidians. These include cyclic peptides, one of which, didemnin B, is undergoing clinical trials for cancer chemotherapy and is also a powerful immunosuppressive agent.
D J, Watters, A L, Van Den Brenk
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2018
Ascidians are tunicates, which constitute the sister group of vertebrates. The ascidian genome contains two Zic genes, called Zic-r.a (also called Macho-1) and Zic-r.b (ZicL). The latter is a multi-copy gene, and the precise copy number has not yet been determined.
Yutaka, Satou, Kaoru S, Imai
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Ascidians are tunicates, which constitute the sister group of vertebrates. The ascidian genome contains two Zic genes, called Zic-r.a (also called Macho-1) and Zic-r.b (ZicL). The latter is a multi-copy gene, and the precise copy number has not yet been determined.
Yutaka, Satou, Kaoru S, Imai
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Development Genes and Evolution, 2002
The engrailed genes play roles in the maintenance of segment polarity in a variety of animals and in the establishment and maintenance of the mid-brain/hind-brain boundary (MHB) in vertebrates. We isolated an ascidian engrailed gene and analyzed its expression pattern during early development. Expression begins at the neurula stage and is restricted to
Di, Jiang, William C, Smith
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The engrailed genes play roles in the maintenance of segment polarity in a variety of animals and in the establishment and maintenance of the mid-brain/hind-brain boundary (MHB) in vertebrates. We isolated an ascidian engrailed gene and analyzed its expression pattern during early development. Expression begins at the neurula stage and is restricted to
Di, Jiang, William C, Smith
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Interspecific Fertilization in Ascidians
Nature, 1948THE only experimental work on interspecific fertilization in Ascidians known to me is that of Reverberi1, who succeeded in fertilizing Ciona intestinalis eggs with Phallusia mamillata sperms after removal of the egg membranes. He availed himself of Morgan‘s observation that in Ciona only the egg membranes oppose self-fertilization.
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Ascidian one‐half embryos can develop into functional adult ascidians
Journal of Experimental Zoology, 1983AbstractAlthough adult ascidians have remarkable regenerative potency, the ascidian egg is considered a typical “mosaic” egg. A single blastomere isolated at the two‐cell stage develops into a half tadpole with minor or major defects, and this rigidity of ascidian development is known to depend on the localization of cytoplasmic determinants.
M, Nakauchi, T, Takeshita
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Nature, 1958 IT has been known since 19111 that the blood of certain species of ascidians contains organically bound vanadium. Bertrand2 has shown that most marine invertebrates contain between 0.2 and 2 parts per million of vanadium dry weight, whereas in ascidians the figure may be as high as 6,500 p.p.m. dry weight.
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The Biological Bulletin, 1932
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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2004
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Sanamyan, Karen, Schories, Dirk
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(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Sanamyan, Karen, Schories, Dirk
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2016
Ascidians/tunicates are one of the dominant members in the benthic macrofauna and contribute more significantly to raise the biodiversity of marine ecosystem by extending their distribution on a variety of natural as well as the artificial substratum across the world.
H. Abdul Jaffar Ali, M. Tamilselvi
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Ascidians/tunicates are one of the dominant members in the benthic macrofauna and contribute more significantly to raise the biodiversity of marine ecosystem by extending their distribution on a variety of natural as well as the artificial substratum across the world.
H. Abdul Jaffar Ali, M. Tamilselvi
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2016
The mysterious morphological structure of ascidians was taken into account for classification by various researchers. Herdman (1882) has given a classification of tunicate based upon the external features in relation to gemmation and formation of colonies.
H. Abdul Jaffar Ali, M. Tamilselvi
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The mysterious morphological structure of ascidians was taken into account for classification by various researchers. Herdman (1882) has given a classification of tunicate based upon the external features in relation to gemmation and formation of colonies.
H. Abdul Jaffar Ali, M. Tamilselvi
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