Results 141 to 150 of about 6,562 (170)
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Developmental Biology, 1993
Ascidian sperm were activated and attracted to all of the surface of a whole egg. When the whole egg was separated into follicle cells, chorion and test cells, and the egg itself (naked egg), spermatozoa were activated and exhibited chemotaxis toward the vegetal pole of the naked egg.
M, Yoshida, K, Inaba, M, Morisawa
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Ascidian sperm were activated and attracted to all of the surface of a whole egg. When the whole egg was separated into follicle cells, chorion and test cells, and the egg itself (naked egg), spermatozoa were activated and exhibited chemotaxis toward the vegetal pole of the naked egg.
M, Yoshida, K, Inaba, M, Morisawa
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REGENERACIJA PRI PLAŠČARJU CIONA
Pomurska obzorjaCiona intestinalis je plaščar (poddeblo Tunicata, deblo strunarji/Chordata), ki je spoznan za enega najbližjih živečih sorodnikov vretenčarjev. Vendar pa ima Ciona v osupljivem nasprotju z večino vretenčarjev, ki kažejo omejene sposobnosti regeneracije, močne regenerativne sposobnosti.
Špela Gorički, William Jeffery
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2003
Published as part of Lambert, Gretchen, 2003, New records of ascidians from the NE Pacific: a new species of Trididemnum, range extension and redescription of Aplidiopsis pannosum (Ritter, 1899) including its larva, and several non-indigenous species, pp.
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Published as part of Lambert, Gretchen, 2003, New records of ascidians from the NE Pacific: a new species of Trididemnum, range extension and redescription of Aplidiopsis pannosum (Ritter, 1899) including its larva, and several non-indigenous species, pp.
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Dr. Kammerer's Ciona Experiments
Nature, 1923IN NATURE of May 12, p. 639, Dr. Kammerer wrote: “Not content with any of the previous experiments [made by himself on the inheritance of acquired characters], I carried out, before 1914, what may really be an experimentum crucis,” and Dr. Kammerer states that when the siphons of Ciona intestinalis are cut off they regenerate longer than they ...
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Gene-regulatory networks in the Ciona embryos
Briefings in Functional Genomics and Proteomics, 2009Ascidians belong to the subphylum Urochordata or Tunicata, which is the sister group of the vertebrates. The simple architecture of the ascidian larva represents the basic chordate body plan. Recent analyses have shown many instances of developmental mechanisms conserved during evolution, while these studies have also revealed a much larger number of ...
Atsushi, Kubo +2 more
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Ciona pomponiae Monniot & Monniot 1989
2007Ciona pomponiae Monniot & Monniot, 1989 (Figure 1) Ciona pomponiae Monniot and Monniot, 1989: 17. Ciona gefesti Sanamyan, 1998: 98. Material examined: RV Keldish, cruise 22, st. 2328, 1814– 1920m, 53°26.59'N, 160°21.00'E – 53°25.76'N, 160°21.40'E, 14 August 1990, one specimen.
Sanamyan, Karen, Sanamyan, Nadya
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Ciona robusta Hoshino & Tokioka 1967
2016Ciona robusta Hoshino & Tokioka, 1967 Fig. 7A References and synonymy: Ciona robusta Hoshino & Tokioka (1967) p. 276; Brunetti et al. (2015) p. 186; Ciona intestinalis type A (Sato et al. 2012) p. 1611. Localities: 2N, 3N, 6N. Remarks. the cosmopolitan taxon Ciona intestinalis has been recently shown to lump together several cryptic species, of which ...
Turon, Xavier +4 more
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The Ciona Notochord Gene Regulatory Network
2018Complex gene regulatory networks are at the heart of cell fate specification and differentiation. The simple chordate Ciona has remarkable advantages for the dissection of these regulatory networks, including a stereotypically chordate but extremely small and simple embryo, a streamlined and compact genome, and highly efficient transgenesis by ...
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Experiments on Alytes and Ciona
Nature, 1923THOSE who have followed this discussion may be interested in its subsequent course. I lately received the following letter, undated, from Dr. H. Przibram, director of the Versuchsanstalt, to which I have made the reply subjoined.
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Experiments on Ciona and Alytes
Nature, 1923IN NATURE of November 3, page 653, Mr. H. Munro Fox announces that he did not succeed in repeating my results in his Ciona experiments in Roscoff: amputated siphons regained only their normal length. Mr. Fox supposes that the extra growth in length of the siphons in my experiments was produced by extravagant feeding, and not by the regenerative ...
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