Results 61 to 70 of about 323,067 (356)

Therapsids as Mammals [PDF]

open access: yesEvolution, 1960
The therapsids are usually placed in the class Reptilia as its most mammal-like representatives. This is on the basis of the now commonly accepted criteria of jaw-ear structure, where mammals are defined as having (1) a dentary-squamosal suspensorium, (2) the articularquadrate joint not a mandibular suspensorium, (3) three middle ear bones, and (4) the
openaire   +1 more source

A Cre‐dependent lentiviral vector for neuron subtype‐specific expression of large proteins

open access: yesFEBS Letters, EarlyView.
We designed a versatile and modular lentivector comprising a Cre‐dependent switch and self‐cleaving 2A peptide and tested it for co‐expression of GFP and a 2.8 kb gene of interest (GOI) in mouse cortical parvalbumin (PV+) interneurons and midbrain dopamine (TH+) neurons.
Weixuan Xue   +6 more
wiley   +1 more source

One Health against the extinction of the mountain tapir (Tapirus pinchaque) in the Central Andes of Colombia

open access: yesCABI One Health
Colombia is the only country that supports populations of three tapir species. Among them, the mountain tapir (Tapirus pinchaque) is classified as Endangered (EN) due to the rapid transformation of its natural habitats. This threat is further exacerbated
Hugo Mantilla-Meluk   +12 more
doaj   +1 more source

Quantification of argyrophillic, argentaffin and insulin immunoreactive cells in the small intestine in the opossum Didelphis aurita (Wied-Neuwied, 1826) - doi: 10.4025/actascibiolsci.v33i4.8644

open access: yesActa Scientiarum: Biological Sciences, 2011
The objective of this study was to quantify argyrophillic, argentaffin and insulin immunoreactive endocrine cells in the different segments of the small intestine of Didelphis aurita and measure probable differences in the number of these cells between ...
Gláucia Marques Freitas Ribeiro   +4 more
doaj   +1 more source

The accelerating influence of humans on mammalian macroecological patterns over the late Quaternary [PDF]

open access: yes, 2019
The transition of hominins to a largely meat-based diet ~1.8 million years ago led to the exploitation of other mammals for food and resources. As hominins, particularly archaic and modern humans, became increasingly abundant and dispersed across the ...
Elliott Smith, Rosemary E.   +4 more
core   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Molecular Identification of Selected Cervid Helminths in Supplementarily Fed European Bison Population

open access: yesJournal of Parasitology Research
Conclusion: Management practices, such as supplementary feeding, can influence the spread of parasite infections in social mammals. This study also promotes the application of molecular methods for noninvasive parasitological monitoring of wildlife ...
Magdalena Świsłocka-Cutter   +4 more
doaj   +1 more source

A New Algorithm for Identifying Genome Rearrangements in the Mammalian Evolution

open access: yesFrontiers in Genetics, 2019
Genome rearrangements are the evolutionary events on level of genomes. It is a global view on evolution research of species to analyze the genome rearrangements.
Juan Wang   +4 more
doaj   +1 more source

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo   +4 more
wiley   +1 more source

Ecological drivers of movement for two sympatric marine predators in the California current large marine ecosystem

open access: yesMovement Ecology
Background An animal’s movement reflects behavioral decisions made to address ecological needs; specifically, that movement will become less directional in regions with high prey availability, indicating foraging behavior.
Ladd M. Irvine   +5 more
doaj   +1 more source

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