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    1. Developmental Biology

    Pitx2c orchestrates embryonic axis extension via mesendodermal cell migration

    Michelle M Collins et al.
    Expression of Pitx2c at the onset of gastrulation drives convergence and extension movements in the zebrafish embryo by promoting downstream pathways affecting chemokine signaling, integrin-ECM interactions, and planar cell polarity components.
    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. Biochemistry and Chemical Biology
    2. Neuroscience

    Science Forum: Addressing selective reporting of experiments through predefined exclusion criteria

    Kleber Neves, Olavo B Amaral
    Researchers should define in advance the criteria for excluding the results of experiments that 'did not work' from articles.
    1. Neuroscience

    Navigating the garden of forking paths for data exclusions in fear conditioning research

    Tina B Lonsdorf et al.
    Exclusion of participants in tasks with a learning element can introduce substantial bias and needs to be carefully considered and transparently reported and justified.
    1. Cell Biology
    2. Developmental Biology

    Anisotropic organization of circumferential actomyosin characterizes hematopoietic stem cells emergence in the zebrafish

    Mylene Lancino et al.
    Emergence of hematopoietic stem cells from an aortic component is a unique phenomenon of cell extrusion, with no equivalent in cell biology, and which is adapted to environmental constraints exerted by endothelial cells and hemodynamics forces.
    1. Developmental Biology
    2. Structural Biology and Molecular Biophysics

    Large, long range tensile forces drive convergence during Xenopus blastopore closure and body axis elongation

    David R Shook et al.
    Blastopore closure in Xenopus is driven by two morphogenic mechanisms that have strongly context dependent effects on tissue movement and that generate tensile force across tissues: convergent extension, as expected, and, unexpectedly, convergent thickening.
    1. Chromosomes and Gene Expression

    Scc2/Nipbl hops between chromosomal cohesin rings after loading

    James Rhodes et al.
    The cohesin loading factor Scc2/Nipbl interacts frequently with cohesin after the loading reaction in a manner consistent with a role in stimulating loop extrusion.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Cohesin and condensin extrude DNA loops in a cell cycle-dependent manner

    Stefan Golfier et al.
    Reconstitution of DNA loop extrusion in cellular contexts using Xenopus egg extracts shows that condensin extrudes DNA loops non-symmetrically in metaphase, whereas cohesin extrudes DNA loops symmetrically in interphase.
    1. Neuroscience

    A multicellular rosette-mediated collective dendrite extension

    Li Fan et al.
    Migrating skin carries the amphid rosette vertex anteriorly to extrude and position dendrites.