1,856 results found
    1. Developmental Biology
    2. Evolutionary Biology

    Domestic chickens activate a piRNA defense against avian leukosis virus

    Yu Huining Sun et al.
    To protect the germ line genome, chickens acquire new small RNA-based immune defense in response to recently endogenized retroviruses by turning a truncated provirus into a weapon.
    1. Developmental Biology

    Molecular conservation of marsupial and eutherian placentation and lactation

    Michael W Guernsey et al.
    The short-lived tammar wallaby placenta expresses genes resembling eutherian placentas, establishing marsupials as "placental mammals", further, dynamic lactation allows marsupials to compensate for short placentation by expressing key placental genes in the mammary gland.
    1. Cell Biology

    Mitochondrial flashes regulate ATP homeostasis in the heart

    Xianhua Wang et al.
    Mitochondrial flashes counteract the imbalance of ATP supply-and-demand and constitute an auto-regulator of ATP homeostasis in the heart.
    1. Cell Biology
    2. Developmental Biology

    TMEM95 is a sperm membrane protein essential for mammalian fertilization

    Ismael Lamas-Toranzo et al.
    TMEM95, a protein localized to the sperm acrosome cap, is essential for fertilization.
    1. Cell Biology
    2. Developmental Biology

    Macrophages are necessary for epimorphic regeneration in African spiny mice

    Jennifer Simkin et al.
    Inflammatory cells differentially regulate a scarring versus a regenerating response to injury in mammals.
    1. Biochemistry and Chemical Biology

    LARP4 mRNA codon-tRNA match contributes to LARP4 activity for ribosomal protein mRNA poly(A) tail length protection

    Sandy Mattijssen et al.
    The messenger RNA encoding La-related protein-4 (LARP4) contains a short region of instability whose codon clusters are sensitive to low abundance tRNAs that when elevated increase LARP4 activity for poly(A) lengthening of ribosomal protein mRNAs and other mRNAs.
    1. Neuroscience

    Unexplained repeated pregnancy loss is associated with altered perceptual and brain responses to men’s body-odor

    Liron Rozenkrantz et al.
    Women with unexplained miscarriages have an altered behavioral and brain response to men's body-odor, and this may reflect a factor in their condition.
    1. Stem Cells and Regenerative Medicine

    Ecdysone steroid hormone remote controls intestinal stem cell fate decisions via the PPARγ-homolog Eip75B in Drosophila

    Lisa Zipper et al.
    A systemic hormone controls progenitor fate decisions independent of local fate determining pathways in the adult intestinal stem cell niche of Drosophila melanogaster..
    1. Ecology
    2. Evolutionary Biology

    Sexual dimorphism in trait variability and its eco-evolutionary and statistical implications

    Susanne RK Zajitschek et al.
    Sex differences in trait variability imply that both sexes should be included in biomedical trials, using sex-specific statistical power calculations.
    1. Microbiology and Infectious Disease

    A single mutation in Crimean-Congo hemorrhagic fever virus discovered in ticks impairs infectivity in human cells

    Brian L Hua et al.
    Tick-derived sequence variation in the fusion glycoprotein of Crimean-Congo hemorrhagic fever virus (CCHFV) drastically impairs infection of mammalian cells, suggesting that certain CCHFV strains undergo purifying selection in mammalian hosts.

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