354 results found
    1. Developmental Biology
    2. Genetics and Genomics

    Extensive intraspecies cryptic variation in an ancient embryonic gene regulatory network

    Yamila N Torres Cleuren et al.
    Quantitative genetic analyses reveal remarkably broad genetic variation underlies the requirement for two critical regulatory inputs into a core embryonic gene regulatory network within one animal species.
    1. Developmental Biology
    2. Evolutionary Biology

    Fgf-signaling is compartmentalized within the mesenchyme and controls proliferation during salamander limb development

    Sruthi Purushothaman et al.
    While movement of Fgf-signaling to the limb mesenchyme accompanied a shift in function, the ultimate outcome remains a convergent tetrapod limb phenotype.
    1. Neuroscience

    Evolution of neuronal anatomy and circuitry in two highly divergent nematode species

    Ray L Hong et al.
    The substrate for evolutionary divergence does not lie in changes in neuronal cell number or targeting, but rather in sensory perception and synaptic partner choice within invariant, prepatterned neuronal processes.
    1. Ecology
    2. Evolutionary Biology

    Reduced metabolism supports hypoxic flight in the high-flying bar-headed goose (Anser indicus)

    Jessica U Meir et al.
    Measurements of bar-headed geese flying in a wind tunnel in hypoxia reveal that these birds sustain aerobic flight at high altitude via a reduction in metabolism.
    1. Immunology and Inflammation

    B cells suppress medullary granulopoiesis by an extracellular glycosylation-dependent mechanism

    Eric E Irons et al.
    B cells regulate production of neutrophils by a novel mechanism by releasing ST6Gal-1, an active sialyltransferase, that suppresses granulopoiesis.
    1. Cancer Biology

    Mutationally-activated PI3’-kinase-α promotes de-differentiation of lung tumors initiated by the BRAFV600E oncoprotein kinase

    J Edward van Veen et al.
    Two of the most commonly mutated growth factor pathways induce a deadly feature of lung adenocarcinoma.
    1. Neuroscience

    In vivo imaging with a water immersion objective affects brain temperature, blood flow and oxygenation

    Morgane Roche et al.
    Brain temperature and oxygenation vary according to the imaging conditions during two-photon microscopy.
    1. Neuroscience

    Spinal V2b neurons reveal a role for ipsilateral inhibition in speed control

    Rebecca A Callahan et al.
    Two anatomically and genetically distinct subtypes of spinal V2b neurons provide inhibition onto motor circuits and serve as a brake on locomotor speed.
    1. Neuroscience

    Vocal and locomotor coordination develops in association with the autonomic nervous system

    Morgan L Gustison et al.
    Marmoset monkeys develop their vocal behavior prior to their postural and locomotor skills, but the coordination of these two motor systems emerges gradually via changes in arousal level.
    1. Chromosomes and Gene Expression
    2. Developmental Biology

    Multi-enhancer transcriptional hubs confer phenotypic robustness

    Albert Tsai et al.
    Multiple enhancers in physical proximity can reinforce shared transcriptional 'hubs' to preserve their transcriptional output, providing a buffer during environmental stresses and genetic perturbations to preserve phenotypic robustness.

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