Results 161 to 170 of about 292,339 (266)

Effects of intermittent exposure to hypobaria and cold on the microarchitecture and morphofunctional profile of rat gastrocnemius muscle

The Anatomical Record, EarlyView.
Abstract Intermittent hypobaric hypoxia (IHH) enhances oxygen transport, muscle metabolism, and cardiovascular health; however, the combined effects of hypobaria and cold are less well understood. Exposure to these stressful environmental factors, even intermittently, can affect skeletal muscle due to its plasticity, thereby altering its metabolic and ...
Garoa Santocildes, Teresa Pagès, Ginés Viscor, Joan Ramon Torrella   +3 more
wiley   +1 more source

Comparative and immunohistochemical analyses on hepatic zonation in vertebrates with a special reference to evolution. [PDF]

Cell Tissue Res
Shiojiri N, Ota N, Hirose H, Fukuda T, Kato H, Maeda H, Takabayashi S, Kawasaki T, Ikeo K.   +8 more
europepmc   +1 more source

Growth dynamics, skeletochronology, and histovariability of the theropod dinosaur Berthasaura leopoldinae

The Anatomical Record, EarlyView.
Osteohistological sampling on different bones of theropod dinosaur documents discrepant age record, growth, and metabolism. This could result unprecise paleobiological inferences if samplings are based on single bones. However, multi‐bone sampling can attenuate these discrepancies, helping to infer growth dynamics and physiology of these extinct ...
Geovane Alves de Souza, Marina Bento Soares, Luiz Carlos Weinschütz, Alexander Wilhelm Armin Kellner   +3 more
wiley   +1 more source

Endothermy, neuron counts, and other issues: Further remarks on neurocognitive evolution in fossil vertebrates

The Anatomical Record, EarlyView.
Abstract Last year, we challenged the view that large‐bodied theropod dinosaurs such as Tyrannosaurus rex resembled primates in cognition and behavior, a proposition made by Herculano‐Houzel in 2023. More recently, Jensen et al. have criticized our work on this topic, raising methodological and conceptual issues.
Kai R. Caspar, Cristián Gutiérrez‐Ibáñez, Hady George, Thomas R. Holtz Jr., Darren Naish, Grant R. Hurlburt   +5 more
wiley   +1 more source

Role of soft tissue and bone interactions in the developmental integration and modularity of the skull in neural crest‐specific gap junction alpha‐1 knockout mice

The Anatomical Record, EarlyView.
Abstract The vertebrate skull is composed of bones derived from neural crest cells and mesoderm. The evolutionary capacity of the skull has been linked, in part, to the emergence of neural crest cells; however, this increased capacity for evolutionary change requires that variation within neural crest‐ and mesoderm‐derived bones remains partly ...
Alyssa C. Moore, Madeline Tourigny, Diana Quinonez, Kevin Barr, Matthew W. Grol, Katherine E. Willmore   +5 more
wiley   +1 more source

Tracing the vertebrate selenoproteome evolution reveals expansions in ray-finned fishes and convergent depletions in tetrapods. [PDF]

BMC Genomics
Ticó M, Lozano-Fernandez J, Mariotti M.
europepmc   +1 more source

Gonadal development in scorpion mud‐turtles, Kinosternon scorpioides, in a controlled environment

The Anatomical Record, EarlyView.
Stage 20 was identified as the critical point for gonadal differentiation in Kinosternon scorpioides, providing key insights into sex determination. These findings enhance conservation strategies by supporting reproductive management and population viability in both in situ and ex situ programs. Abstract Research on gonadal development including sexual
Brenda Braga, Verônica Oliveira‐Bahia, Maria Auxiliadora Ferreira, José Ribamar Felipe Marques, Diva Araújo Guimarães   +4 more
wiley   +1 more source

Animals have expanded the evolutionary legacy of unicellular ancestors in blood cells. [PDF]

Proc Natl Acad Sci U S A
Nagahata Y, Nishimura Y, Kaitani R, Leong JCK, Oda-Ishii I, Kohtsuka H, Abe S, Ishida T, Carmona-Rivas M, Najle SR, Casacuberta E, Ikuta K, Miura T, Ogasawara M, Irie N, Satou Y, Ruiz-Trillo I, Kawamoto H.   +17 more
europepmc   +1 more source

An osteohistological analysis of Triceratops (Ornithischia: Ceratopsidae) cranial ornamentation

The Anatomical Record, EarlyView.
Abstract Ceratopsids are among the most distinctive and well known extinct Cretaceous vertebrates, yet many details regarding the growth and composition of their cranial features are still not fully anatomically described or understood. In particular, striking cranial adornments such as the postorbital horns and parietal‐squamosal frill of Triceratops ...
Kyle D. Obuszewski, N. Adam Smith, Guinevere Rose Brown   +2 more
wiley   +1 more source

The molecular evolution of vertebrate organs. [PDF]

Nat Ecol Evol
Cardoso-Moreira M.
europepmc   +1 more source