Results 51 to 60 of about 33,521 (167)

Developmental morphology of claspers and clasper‐glands during maturation in Potamotrygon wallacei (Chondrichthyes: Potamotrygoninae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The claspers are the copulatory organs in male elasmobranchs, responsible for directing the semen into the female cloaca (C). However, the microscopic morphology of the claspers remains poorly understood. This study describes the morphology of the claspers and clasper glands (CGs) of cururu stingray (Potamotrygon wallacei) at different ...
Matheus Samuel Cunha Braga   +4 more
wiley   +1 more source

New fossil unveils the dentary anatomy of the rare lepidosauromorph Cargninia enigmatica from the Upper Triassic of Southern Brazil

open access: yesThe Anatomical Record, EarlyView.
Abstract Nowadays, Lepidosauria is a diverse group represented by squamates and the rhynchocephalian tuatara. However, their origins date back to the end of the Permian Period, when the stem lineages Lepidosauromorpha and Archosauromorpha diverged. Within the lepidosauromorph stem lineage, a few species have been described with unstable phylogenetic ...
Lísie Vitória Soares Damke   +4 more
wiley   +1 more source

Redescription of the cranial morphology of Amphisbaena braestrupi and Amphisbaena laurenti (Squamata: Amphisbaenidae) from the Pleistocene of Brazil using x‐ray computed tomography

open access: yesThe Anatomical Record, EarlyView.
Abstract Amphisbaenians (Squamata: Amphisbaenidae) are fossorial reptiles with highly specialized cranial morphology, yet their fossil record is frequently limited by fragmentary preservation. This study provides a detailed osteological redescription of the skulls of Amphisbaena braestrupi and Amphisbaena laurenti from the Pleistocene of Lagoa Santa ...
Carolina L. Paiva   +2 more
wiley   +1 more source

Heat Stress and Gut Microbiome Dynamics in Poultry: Interplay, Consequences, and Mitigation Strategies

open access: yesAnimal Research and One Health, EarlyView.
Heat stress disrupts gut microbial balance in poultry, impairing nutrient absorption and immunity. This review outlines the interplay between thermal stress and microbiome dynamics and discusses integrative mitigation strategies, probiotics, phytogenics, cooling systems, and genetic adaptation to enhance poultry resilience.
O. E. Oke   +9 more
wiley   +1 more source

Enhancing Meat Quality Through Dietary Fiber: Insights Into the Gut Microbiota‐Derived Short‐Chain Fatty Acids‐Muscle Axis

open access: yesAnimal Research and One Health, EarlyView.
Dietary fiber (DF) modulates meat quality through the gut‐muscle axis by reshaping gut microbiota, improving intestinal integrity, reducing inflammation, and regulating muscle metabolism. These mechanisms influence muscle fiber characteristics and post‐mortem biochemistry, thereby enhancing tenderness, juiciness, color, flavor, and nutritional value of
Zeshan Zulfiqar   +8 more
wiley   +1 more source

Comparative Analysis of Salmonella typhimurium‐Induced Transcriptomic Changes in the Spleen of Beijing‐You Chickens and Guang Ming Broilers

open access: yesAnimal Research and One Health, EarlyView.
This study analyzed the spleen transcriptomes of different chicken breeds, identified key differentially expressed genes (EGR1, FOS, and DUSP1) that regulate resistance to Salmonella infection, and elucidated the underlying regulatory mechanisms, thereby providing new targets for disease‐resistant breeding in poultry.
Zixuan Wang   +8 more
wiley   +1 more source

Nanomaterial-genetics enables near-infrared-driven genetically targeted neuromodulation. [PDF]

open access: yesSci Adv
Liu Y   +14 more
europepmc   +1 more source

Cross‐Species Single‐Cell Comparative Analysis Reveals Gluconeogenic Features of Hepatocytes in Ruminants

open access: yesAnimal Research and One Health, EarlyView.
In this study, we used cross‐species comparisons to identify ruminant hepatocyte features. We also identified potential genes and TFs involved in coordinating gluconeogenesis in ruminant hepatocytes. By integrating single‐cell data with population genetic analyses, we further identified candidate genetic variation in glucose metabolism and ...
Yaqi Zhou   +6 more
wiley   +1 more source

Oxytocin Signaling Bidirectionally Modulates Serotonergic and Dopaminergic Neurons in the Dorsal Raphe Nucleus. [PDF]

open access: yeseNeuro
Choi JE   +9 more
europepmc   +1 more source

Age‐Associated B Cells Contribute to Inflammation Via Antibody‐Independent Mechanisms in Takayasu Arteritis

open access: yesArthritis &Rheumatology, EarlyView.
Objective Although Takayasu arteritis (TAK) is not a prototypical autoantibody‐mediated disease, accumulating evidence suggests that B cells are involved. This study aimed to investigate the pathway of B cell activation and its contributions to TAK pathogenesis. Methods Histologic analysis of paravascular lymph nodes and affected arteries was conducted
Chenglong Fang   +10 more
wiley   +1 more source

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