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    1. Ecology
    2. Neuroscience

    Burst muscle performance predicts the speed, acceleration, and turning performance of Anna’s hummingbirds

    Paolo S Segre et al.
    Maneuverability is thought to be limited by either intrinsic constraints or physiological capacity, and automated tracking of flying hummingbirds reveals that muscle capacity explains much of the variation in their flight trajectories.
    1. Evolutionary Biology

    Compound-V formations in shorebird flocks

    Aaron J Corcoran, Tyson L Hedrick
    Shorebird flocks fly in a formation that re-creates the neighbor positioning relationship of a V-formation in cluster flocks of more than 1000 birds.
    1. Computational and Systems Biology
    2. Developmental Biology

    Vascular dimorphism ensured by regulated proteoglycan dynamics favors rapid umbilical artery closure at birth

    Sumeda Nandadasa et al.
    Morphologic, molecular, biomechanical and computational analyses show that the specialized extracellular matrix architecture of the umbilical artery contributes to its rapid closure at birth and regulates smooth muscle cell differentiation.
    1. Neuroscience

    Cortex-dependent recovery of unassisted hindlimb locomotion after complete spinal cord injury in adult rats

    Anitha Manohar et al.
    After complete spinal transection in adult rats, careful combinations of pharmacological and physical therapies create a novel cortical sensorimotor circuit that may bypass the lesion through biomechanical coupling, allowing animals to recover unassisted hindlimb locomotion.
    1. Cell Biology
    2. Developmental Biology

    FBN-1, a fibrillin-related protein, is required for resistance of the epidermis to mechanical deformation during C. elegans embryogenesis

    Melissa Kelley et al.
    A fibrillin-related protein, FBN-1, is a key component of the apical extracellular matrix and prevents epidermal cell deformation by biomechanical forces during morphogenesis of the C. elegans embryo.
    1. Developmental Biology

    Spatial patterning of liver progenitor cell differentiation mediated by cellular contractility and Notch signaling

    Kerim B Kaylan et al.
    Mechanical stress plays a cooperative role with Notch in biliary differentiation of liver progenitors, supporting a model of liver development in which biomechanical cues are key inducers of cell fate.
    1. Developmental Biology
    2. Structural Biology and Molecular Biophysics

    Gastrulation: May the force be with you

    Shinuo Weng, John B Wallingford
    Understanding the coordination of the forces generated in embryos by two processes, convergent extension and convergent thickening, is key to understanding how a hollow sphere of cells develops into an elongated embryo.
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    1. Physics of Living Systems

    Downsizing the molecular spring of the giant protein titin reveals that skeletal muscle titin determines passive stiffness and drives longitudinal hypertrophy

    Ambjorn Brynnel et al.
    Genetically altering the size of the molecular spring element in the giant protein titin established that titin determines the stiffness of skeletal muscle and the number of sarcomeres in series.
    1. Physics of Living Systems

    Mitigating memory effects during undulatory locomotion on hysteretic materials

    Perrin E Schiebel et al.
    Undulatory animals moving on the surface must manage material memory by either having a slender anatomy that facilitates avoiding previously remodeled substrate, or using waveshapes that effectively utilize the memory.
    1. Neuroscience

    A Matlab-based toolbox for characterizing behavior of rodents engaged in string-pulling

    Samsoon Inayat et al.
    Analysis methods for video data of rodents engaged in string-pulling behavior have been developed and used to highlight differences in motion profiles of Swiss Webster and C57Bl/6 mice.