Results 31 to 40 of about 458,582 (324)
Frontiers in Endocrinology, 2019 During animal evolution, ancestral Cnidaria and Bilateria diverged more than 600 million years ago. The nervous systems of extant cnidarians are strongly peptidergic.
Thomas L. Koch +1 more
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Neural Cell Type Diversity in Cnidaria
Frontiers in Neuroscience, 2022 Neurons are the fundamental building blocks of nervous systems. It appears intuitive that the human brain is made up of hundreds, if not thousands different types of neurons.
Simon G. Sprecher
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The phylogenetic position of ctenophores and the origin(s) of nervous systems [PDF]
, 2015 Ctenophores have traditionally been treated as eumetazoans, but some recent whole genome studies have revived the idea that they are, rather, the sister group to all other metazoans.
Jákely, Gáspár +2 more
core +3 more sources
An evolutionary genomics view on neuropeptide genes in Hydrozoa and Endocnidozoa (Myxozoa)
BMC Genomics, 2021 Background The animal phylum Cnidaria consists of six classes or subphyla: Hydrozoa, Scyphozoa, Cubozoa, Staurozoa, Anthozoa, and Endocnidozoa. Cnidarians have an early evolutionary origin, diverging before the emergence of the Bilateria.
Thomas L. Koch +2 more
doaj +1 more source
Evolution of eumetazoan nervous systems: insights from cnidarians [PDF]
Philosophical Transactions of the Royal Society B: Biological Sciences, 2015 Cnidarians, the sister group to bilaterians, have a simple diffuse nervous system. This morphological simplicity and their phylogenetic position make them a crucial group in the study of the evolution of the nervous system. The development of their nervous systems is of particular interest, as by uncovering the genetic programme that underlies it, and ...
Kelava, Iva +2 more
openaire +4 more sources
Dynamic clonal progression in xenografts of acute lymphoblastic leukemia with intrachromosomal amplification of chromosome 21 [PDF]
, 2018 Intrachromosomal amplification of chromosome 21 is a heterogeneous chromosomal rearrangement occurring in 2% of childhood precursor B-cell acute lymphoblastic leukemia.
Bashton, Matthew +18 more
core +3 more sources
Distribution of choline acetyltransferase (ChAT) immunoreactivity in the brain of the teleost cyprinus carpio [PDF]
, 2018 Cholinergic systems play a role in basic cerebral functions and its dysfunction is associated with deficit in neurodegenerative disease. Mechanisms involved in human brain diseases, are often approached by using fish models, especially cyprinids, given ...
Casini, Arianna +3 more
core +2 more sources
The spontaneous formation of stereotypes via cumulative cultural evolution [PDF]
, 2014 All people share knowledge of cultural stereotypes of social groups—but what are the origins of these stereotypes? We examined whether stereotypes form spontaneously as information is repeatedly passed from person to person.
Cunningham, Sheila J. +5 more
core +5 more sources
Biology Open, 2019 The disk-shaped millimeter-sized marine animal, Trichoplax adhaerens, is notable because of its small number of cell types and primitive mode of feeding.
Tatiana D. Mayorova +4 more
doaj +1 more source
EvoDevo, 2016 Background Kinorhynchs are ecdysozoan animals with a phylogenetic position close to priapulids and loriciferans. To understand the nature of segmentation within Kinorhyncha and to infer a probable ancestry of segmentation within the last common ancestor ...
Andreas Altenburger
doaj +1 more source