Results 81 to 90 of about 1,321 (169)

Extraordinary diversity of the CD28/CTLA4 family across jawed vertebrates

open access: yesFrontiers in Immunology
Members of the CD28 family are critical for the control of immune cell activation. While CD28 and CTLA4 were previously identified in teleost fish, most members of the CD28 family have been described only in tetrapods.
Sylvie M. A. Quiniou   +7 more
doaj   +1 more source

On the Silurian and lowermost Devonian vertebrates of the Ufa Amphitheatre, the Central Urals, with emphasis on agnathans and correlations with the East Baltic [PDF]

open access: yesEstonian Journal of Earth Sciences
The vertebrate microremains from the Wenlock (lower Silurian) to the Lower Lochkovian (Lower Devonian) of the Ufa Amphitheatre, on the western slope of the Central Urals, have been studied.
Tiiu Märss
doaj   +1 more source

Hagfish and lamprey Hox genes reveal conservation of temporal colinearity in vertebrates [PDF]

open access: yes, 2018
Hox genes exert fundamental roles for proper regional specification along the main rostro-caudal axis of animal embryos. They are generally expressed in restricted spatial domains according to their position in the cluster (spatial colinearity)—a feature
A Stamatakis   +64 more
core   +2 more sources

Nanopore environmental DNA sequencing of catch water for estimating species composition in demersal bottom trawl fisheries

open access: yesEnvironmental DNA, Volume 6, Issue 3, May–June 2024.
Reliable data on bycatch and discards are essential for effective management and sustainable fisheries. We collected samples from a tank (catch water) on board a fishing vessel targeting demersal species to evaluate the effectiveness of Nanopore eDNA sequencing for estimating species composition.
Sara Maggini   +10 more
wiley   +1 more source

Discovering adaptive features of innate immune memory

open access: yesImmunological Reviews, Volume 323, Issue 1, Page 186-196, May 2024.
Summary Conventionally, it was thought that innate immunity operated through a simple system of nonspecific responses to an insult. However, this perspective now seems overly simplistic. It has become evident that intricate cooperation and networking among various cells, receptors, signaling pathways, and protein complexes are essential for regulating ...
Mina Sadeghi, Maziar Divangahi
wiley   +1 more source

The non-evaginated secondary prosencephalon of vertebrates

open access: yesFrontiers in Neuroanatomy, 2011
The secondary prosencephalon (telencephalon plus hypothalamus) is probably the most complex area of the brain, with complicated patterning specifications.
Nerea eMoreno, Agustín eGonzález
doaj   +1 more source

The evolution and comparative neurobiology of endocannabinoid signalling [PDF]

open access: yes, 2012
CB(1)- and CB(2)-type cannabinoid receptors mediate effects of the endocannabinoids 2-arachidonoylglycerol (2-AG) and anandamide in mammals. In canonical endocannabinoid-mediated synaptic plasticity, 2-AG is generated postsynaptically by diacylglycerol ...
Devane W. A.   +4 more
core   +1 more source

Darwin, Haeckel, and the “Mikluskan gas organ theory”

open access: yesDevelopmental Dynamics, Volume 253, Issue 4, Page 370-389, April 2024.
Abstract A previously unknown reference to the Russian ethnologist, biologist, and traveler Nikolai N. Miklucho‐Maclay (1846–1888) was discovered in correspondence between Charles Darwin (1809–1882) and Ernst Haeckel (1834–1919). This reference has remained unknown to science, even to Miklucho‐Maclay's biographers, probably because Darwin used the ...
Ingmar Werneburg   +2 more
wiley   +1 more source

Identification and expression of the lamprey Pax6 gene: evolutionary origin of the segmented brain of vertebrates [PDF]

open access: yes, 2001
The Pax6 gene plays a developmental role in various metazoans as the master regulatory gene for eye patterning. Pax6 is also spatially regulated in particular regions of the neural tube.
Hirano, Shigeki   +5 more
core  

A primitive fish from the Cambrian of North America [PDF]

open access: yes, 2014
Knowledge of the early evolution of fish largely depends on soft-bodied material from the Lower (Series 2) Cambrian period of South China. Owing to the rarity of some of these forms and a general lack of comparative material from other deposits ...
Caron, Jean-Bernard   +1 more
core   +1 more source

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