743 results found
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Sister kinetochore splitting and precocious disintegration of bivalents could explain the maternal age effect

    Agata P Zielinska et al.
    Multiple age-related changes in chromosome architecture could explain why human oocyte aneuploidy increases with advanced maternal age.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Chromosome Segregation: Freewheeling sisters cause problems

    Takashi Akera, Michael A Lampson
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    1. Developmental Biology

    Prolonged ovarian storage of mature Drosophila oocytes dramatically increases meiotic spindle instability

    Ethan J Greenblatt et al.
    Meiotic chromosome segregation in mature Drosophila oocytes is sensitive to prolonged quiescence, suggesting that human oocyte instability may result from storage of mature rather than primordial oocytes and be modifiable.
    1. Neuroscience

    Neurogenesis: Delayed gratification in the adult brain

    Gerd Kempermann
    Some immature neurons in the cerebral cortex of mammals might wait for years before they become activated and finish their development.
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    1. Evolutionary Biology

    Neuropeptide Signaling: Unravelling the evolutionary history of kisspeptin

    Maria I Arnone, Paola Oliveri
    Experiments in sea cucumbers reveal how the physiological responses regulated by a neuropeptide called kisspeptin have evolved.
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    1. Developmental Biology
    2. Genetics and Genomics

    2018 Gairdner Awards: The discovery and importance of genomic imprinting

    Anne C Ferguson-Smith, Deborah Bourc'his
    Research into genomic imprinting has provided a foundation for the study of epigenetic mechanisms, especially during development, and has also shed light on a range of rare genetic disorders and common diseases.
    1. Evolutionary Biology
    Mouse illustration

    The Natural History of Model Organisms: Insights into mammalian biology from the wild house mouse Mus musculus

    Megan Phifer-Rixey, Michael W Nachman
    Studies of the house mouse Mus musculus have provided important insights into mammalian biology, and efforts to study wild house mice and to create new inbred strains from wild populations have the potential to increase its usefulness as a model system.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures and functional properties of CALHM channels of the human placenta

    Katarzyna Drożdżyk et al.
    Members of the calcium homeostasis modulator family expressed in the placenta form large channels with unknown activation properties that harbor a lipid bilayer on the inside of a cylindrical pore.
    1. Cell Biology
    2. Immunology and Inflammation

    Dissecting the phenotypic and functional heterogeneity of mouse inflammatory osteoclasts by the expression of Cx3cr1

    Maria-Bernadette Madel et al.
    Osteoclasts emerging in inflammation are heterogeneous and encompass a strongly inflammatory subset with a high resorbing activity and an immune suppressive subset that are able to control each other.

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