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    1. Structural Biology and Molecular Biophysics

    Dynamic action of the Sec machinery during initiation, protein translocation and termination

    Tomas Fessl et al.
    The complex process of protein translocation across membranes has been dissected into multiple key steps and the distributions of translocation rates indicate stochastic nature of the reaction.
    1. Human Biology and Medicine

    Potential harmful effects of discontinuing ACE-inhibitors and ARBs in COVID-19 patients

    Gian Paolo Rossi et al.
    Current evidence does not suggest adverse effects of ACE inhibitors or ARBs in COVID-19 patients and, to the contrary, discontinuing these drugs in these patients may potentially be harmful.
    1. Computational and Systems Biology
    2. Immunology and Inflammation

    Memory CD4 T cell subsets are kinetically heterogeneous and replenished from naive T cells at high levels

    Graeme Gossel et al.
    The maintenance of memory CD4 T cells in mice relies on a continual and strikingly high level of replenishment from naive precursors, and older memory T cells may resist the influx of newer ones.
    1. Ecology
    2. Evolutionary Biology

    Palaeobiology: Unearthing the secrets of ancient immature insects

    Enrique Peñalver, Ricardo Pérez-de la Fuente
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    1. Evolutionary Biology
    2. Plant Biology

    An unexpected noncarpellate epigynous flower from the Jurassic of China

    Qiang Fu et al.
    Flowers did bloom in the Early Jurassic.
    1. Evolutionary Biology

    Morphology: Too hip for two sacral vertebrae

    Michelle R Stocker
    A complex pelvic morphology has been discovered in the fossils of one of the largest crocodylians.
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    1. Ecology
    2. Evolutionary Biology

    Brood care in a 100-million-year-old scale insect

    Bo Wang et al.
    The discovery of the earliest direct evidence of brood care in insects demonstrates a remarkably conserved egg-brooding reproductive strategy within scale insects in stasis for nearly 100 million years.
    1. Evolutionary Biology

    Human Evolution: New opportunities rising

    Jessica C Thompson
    More fossil specimens and an eagerly awaited age for Homo naledi raise new questions and open new opportunities for paleoanthropologists.
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    1. Evolutionary Biology

    Geological and taphonomic context for the new hominin species Homo naledi from the Dinaledi Chamber, South Africa

    Paul HGM Dirks et al.
    A new hominin species found in a South African cave is part of one of the most unusual hominin fossil assemblages on record.
    1. Evolutionary Biology

    The age of Homo naledi and associated sediments in the Rising Star Cave, South Africa

    Paul HGM Dirks et al.
    Independent dating techniques have established that the H. naledi fossils are between 236 and 335 thousand years old, indicating that small-brained hominins with relatively primitive body shapes co-existed with our early ancestors in Africa.