Results 81 to 90 of about 13,979 (205)

NK4 Antagonizes Tbx1/10 to Promote Cardiac versus Pharyngeal Muscle Fate in the Ascidian Second Heart Field

open access: yesPLoS Biology, 2013
Cross inhibition between NK4 and TBX1 transcription factors specifies heart versus pharyngeal muscle fates by promoting the activation of tissue-specific regulators in distinct precursors within the cardiopharyngeal lineage of the ascidian, Ciona ...
Wei Wang   +4 more
semanticscholar   +1 more source

Spatial and temporal patterns of native and invasive ascidian assemblages in a Southern California embayment

open access: yes, 2014
Community development of ascidians was monitored weekly in Mission Bay (San Diego, California, USA) from September 2011 through November 2012 to assess how ascidian communities might be structured by spatial differences in environmental conditions.
Brianna Tracy, N. Reyns
semanticscholar   +1 more source

Ascidians from Curaçao [PDF]

open access: yesBijdragen tot de Dierkunde, 1924
Through the kindness of Dr. C. J. VAN DER HORST of Amsterdam, I have had the opportunity of examining and reporting on the collection of ascidians that he made at Curaçao, Dutch West Indies, in April and May, 1920. The collection represents only the littoral fauna of the island; all the specimens appear to have been obtained in very shallow water on ...
openaire   +3 more sources

Isolation of C11 Cyclopentenones from Two Didemnid Species, Lissoclinum sp. and Diplosoma sp.

open access: yesMarine Drugs, 2009
A series of new C11 cyclopentenones 1-7 was isolated, together with four known metabolites 9/10, 12 and 13, from the extract of the didemnid ascidian Lissoclinum sp. The other didemnid ascidian Diplosoma sp.
Katsuhiro Ueda   +5 more
doaj   +1 more source

Gene expression profiles of transcription factors and signaling molecules in the ascidian embryo: towards a comprehensive understanding of gene networks

open access: yesDevelopment, 2004
Achieving a real understanding of animal development obviously requires a comprehensive rather than partial identification of the genes working in each developmental process. Recent decoding of genome sequences will enable us to perform such studies.
K. Imai   +4 more
semanticscholar   +1 more source

Ascidian gene-expression profiles.

open access: yesGenome biology, 2002
With the advent of gene-expression profiling, a large number of genes can now be investigated simultaneously during critical stages of development. This approach will be particularly informative in studies of ascidians, basal chordates whose genomes and embryology are uniquely suited for mapping developmental gene networks.
openaire   +3 more sources

A review of the life history, invasion process, and potential management of Clavelina lepadiformis Müller, 1776: a recent invasion of the northwest Atlantic [PDF]

open access: yesManagement of Biological Invasions, 2012
The colonial tunicate Clavelina lepadiformis is a recent invader to the northwest Atlantic and has the potential to cause ecological andeconomic harm. This paper provides a review of the biological and ecological characteristics of C.
James F. Reinhardt, David M. Hudson
doaj  

Niobium in Ascidians [PDF]

open access: yesNature, 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.
openaire   +1 more source

Colony specificity in Botrylloides leachi. II. Cellular aspects of the non-fusion reaction [PDF]

open access: yesInvertebrate Survival Journal, 2007
We continued our study on fusion and non-fusion reactions in the compound ascidian Botrylloides leachi with particular attention to the role of hemocytes in the induction of the strong cytotoxic reaction observed when genetically incompatible colonies ...
L Ballarin, G Zaniolo
doaj  

Phenoloxidases of different sizes are modulated by LPS inoculation into Ciona intestinalis tunic and pharynx

open access: yesInvertebrate Survival Journal, 2015
In the present study, to further characterize the pro-phenoloxidase (proPO) and active phenoloxidase (PO) involved in the Ciona intestinalis inflammatory response, tunic and pharynx homogenate supernatants were separated on high pressure liquid ...
M R Trapani   +5 more
doaj  

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