Results 81 to 90 of about 361 (104)
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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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The Inflammatory Response of Urochordata: The Basic Process of the Ascidians’ Innate Immunity
2018Ascidians form a widespread marine invertebrate group and are heterogeneous in terms of the taxonomic groups’ evolutionary lineages. The ascidian genomes lack significant homologies for rearranging genes of the vertebrate adoptive immunity. Genome analysis, gene sequencing, and transcriptional profiling have allowed us to disclose upregulation of ...
Parrinello N, Cammarata M, Parrinello D
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Glycogen deposits in the pyloric gland of the ascidian Styela clava (Urochordata)
Cell and Tissue Research, 1977The pyloric gland of Styela clava contains large glycogen deposits that are digested by treatment with alpha amylase and depleted by 15 days starvation. The deposits are surrounded by cytoplasmic regions containing smooth endoplasmic reticulum and mitochondria.
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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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Tight and gap junctions in the intestinal tract of tunicates (urochordata): A freeze-fracture study
Journal of Cell Science, 1986ABSTRACT The intestinal tracts from seven different species of tunicates, some solitary, some colonial, were studied fine-structurally by freeze-fracture. These urochordates occupy an intermediate position phylogenetically between the vertebrates and the invertebrates.
N J, Lane +3 more
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Urochordata: Botryllus – Natural Chimerism and Tolerance Induction in a Colonial Chordate
2018Chimerism is defined as the coexistence of two or more genomes of separate origin within an individual. In placental mammals such as humans, natural chimerism develops during pregnancy between a mother and fetus and has an important role in the induction of fetal tolerance to maternal tissues.
Ayelet Voskoboynik +3 more
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Cell and Tissue Research, 1989
Innervation of the ascidian branchial basket and other structures is demonstrated by staining for cholinesterase. Cholinesterase activity is not restricted to synaptic sites but is present throughout the neurons. Primary and secondary axonal bundles form a bilaterally symmetric innervation pattern around the large dorsal visceral nerve.
S. A. Arkett, G. O. Mackie, C. L. Singla
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Innervation of the ascidian branchial basket and other structures is demonstrated by staining for cholinesterase. Cholinesterase activity is not restricted to synaptic sites but is present throughout the neurons. Primary and secondary axonal bundles form a bilaterally symmetric innervation pattern around the large dorsal visceral nerve.
S. A. Arkett, G. O. Mackie, C. L. Singla
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Current Pharmaceutical Design, 2008
The colonial ascidian Botryllus schlosseri forms new zooids by blastogenesis, through the formation of palleal buds which progressively grow and mature until adults are formed. At a temperature of 19 degrees C, adult zooids remain active for about one week; then they contract, close their siphons and are gradually resorbed, being replaced by buds which
BALLARIN, LORIANO +2 more
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The colonial ascidian Botryllus schlosseri forms new zooids by blastogenesis, through the formation of palleal buds which progressively grow and mature until adults are formed. At a temperature of 19 degrees C, adult zooids remain active for about one week; then they contract, close their siphons and are gradually resorbed, being replaced by buds which
BALLARIN, LORIANO +2 more
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Marine Biology, 1983
Although bioluminescence is known in larvacean tunicates, its origin has not been reported. Two species, Oikopleura dioica and O. labradoriensis, from the northeastern Pacific Ocean, were examined during 1979–1982 to determine the sites of luminescence.
C. P. Galt, P. F. Sykes
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Although bioluminescence is known in larvacean tunicates, its origin has not been reported. Two species, Oikopleura dioica and O. labradoriensis, from the northeastern Pacific Ocean, were examined during 1979–1982 to determine the sites of luminescence.
C. P. Galt, P. F. Sykes
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Chordata, Urochordata (Tunicata, Manteltiere)
2023Achim Paululat, Günter Purschke
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