616 results found
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Altered bone growth dynamics prefigure craniosynostosis in a zebrafish model of Saethre-Chotzen syndrome

    Camilla S Teng et al.
    Sequential live imaging of abnormal skull bone fusion in zebrafish reveals a deeply conserved role of two transcription factors, Twist1 and Tcf12, in regulating stem cell activity during growth of the skull.
    1. Evolutionary Biology

    Preliminary paleohistological observations of the StW 573 (‘Little Foot’) skull

    Amélie Beaudet et al.
    Virtual investigation of the 3.67-million-year-old skull of 'Little Foot' using synchrotron radiation reveals histological details of Australopithecus dental and bone tissues.
    1. Evolutionary Biology

    Oldest skeleton of a fossil flying squirrel casts new light on the phylogeny of the group

    Isaac Casanovas-Vilar et al.
    Flying squirrels may have originated earlier than previously thought and remained unchanged for almost 12 million years.
    1. Developmental Biology
    2. Evolutionary Biology

    Selection for increased tibia length in mice alters skull shape through parallel changes in developmental mechanisms

    Colton M Unger et al.
    Artificial selection for increased tibia length in mice made their skulls longer, narrower, and flatter, suggesting that even distant skeletal regions can evolve as correlated responses to selection acting locally.
    1. Developmental Biology

    Single-cell RNA analysis identifies pre-migratory neural crest cells expressing markers of differentiated derivatives

    Ezra Lencer et al.
    Pre-migratory and early migratory neural crest cells in zebrafish are transcriptionally diverse, with some cells expressing genes associated with differentiated derivatives while still in the neural tube.
    1. Evolutionary Biology

    New fossil remains of Homo naledi from the Lesedi Chamber, South Africa

    John Hawks et al.
    The discovery of new skeletal remains of Homo naledi in the Lesedi Chamber, South Africa, adds more evidence to our understanding of the morphology and behavior of this recently discovered species.
    1. Ecology

    First bone-cracking dog coprolites provide new insight into bone consumption in Borophagus and their unique ecological niche

    Xiaoming Wang et al.
    Fossilized feces (coprolites) of extinct bone-crushing dogs, Borophagus parvus, from late Miocene (6 million years ago) of California demonstrates consumption and preservation of bones in digestive tracts and potential social hunting behavior by these predators.
    1. Developmental Biology
    2. Medicine

    RAB23 coordinates early osteogenesis by repressing FGF10-pERK1/2 and GLI1

    Md Rakibul Hasan et al.
    RAB23 regulates calvarial bone and suture development both independently through, and by cross-talk between, Hedgehog and fibroblast growth factor signaling.
    1. Neuroscience

    Anatomical basis and physiological role of cerebrospinal fluid transport through the murine cribriform plate

    Jordan N Norwood et al.
    Chemical ablation of olfactory sensory neurons blocks cerebrospinal fluid outflow into the nasal epithelium, leading to alterations of cerebrospinal fluid dynamics.
    1. Neuroscience

    Measurements and models of electric fields in the in vivo human brain during transcranial electric stimulation

    Yu Huang et al.
    Direct in-vivo measurements in the human brain test validity of detailed computational models of trancranial electric stimulation and show that electric fields in the brain are weaker than currently assumed.

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