6,652 results found
    1. Microbiology and Infectious Disease

    Density-dependent resistance protects Legionella pneumophila from its own antimicrobial metabolite, HGA

    Tera C Levin et al.
    Legionella pneumophila can be inhibited by its own antimicrobial, HGA (homogentisic acid), but its density-dependent resistance to HGA restricts the potential for self-harm.
    1. Ecology

    Positive density dependence acting on mortality can help maintain species-rich communities

    Thomas G Aubier
    Some forms of positive density-dependence can favor species coexistence even if competitive species benefit the most from positive density-dependence.
    1. Ecology

    A fitness trade-off between seasons causes multigenerational cycles in phenotype and population size

    Gustavo S Betini et al.
    Seasonal variation in resources causes opposing episodes of selection on body size, which interact with density dependence to influence population dynamics.
    1. Cell Biology

    Genome-wide CRISPR screen identifies noncanonical NF-κB signaling as a regulator of density-dependent proliferation

    Maria Fomicheva, Ian G Macara
    TRAF3, a negative regulator of noncanonical NF-κB signaling, maintains epithelial cell quiescence at confluence, and its loss triggers upregulation of immunity genes and prevents entry into G0 at high cell density.
    1. Cancer Biology

    Arid1a restrains Kras-dependent changes in acinar cell identity

    Geulah Livshits et al.
    Arid1a loss in the pancreas enables an irreversible reprogramming of cell fate that is dependent on both cellular and genetic context.
    1. Developmental Biology
    2. Neuroscience

    Birth order dependent growth cone segregation determines synaptic layer identity in the Drosophila visual system

    Abhishek Kulkarni et al.
    Timing in the formation of neurons influences synaptic connectivity.
    1. Cancer Biology
    2. Neuroscience

    Estrogen receptor alpha in the brain mediates tamoxifen-induced changes in physiology in mice

    Zhi Zhang et al.
    Estrogen receptor alpha in the hypothalamus is required for the effects of chronic tamoxifen treament on gene expression, thermoregulation, bone, and movement in mice.
    1. Physics of Living Systems

    Shared behavioral mechanisms underlie C. elegans aggregation and swarming

    Siyu Serena Ding et al.
    Two seemingly distinct behaviors in social C. elegans worms, namely aggregating into groups and swarming over food, are driven by the same underlying mechanisms.
    1. Computational and Systems Biology

    Active contraction of microtubule networks

    Peter J Foster et al.
    Microtubule networks in frog egg extracts can spontaneously contract in a manner that can be quantitatively described by an active fluid model.
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    Delayed antibiotic exposure induces population collapse in enterococcal communities with drug-resistant subpopulations

    Kelsey M Hallinen et al.
    Collapse of bacterial communities containing antibiotic-resistant and susceptible cells can be driven by increased population size or delayed drug exposure.

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