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Genes & Cells

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Hadza women dig for plant food, which makes their diet rich in fiber and influences the microbes in their gut. The bacteria of the hunter-gatherers' guts are substantially different from those of Westerners and even African farmers.

A protein called SWELL1 found in the cell membrane, shown circling the cell in teal in this model, may help cells control swelling and prevent them from popping. 

Entamoeba histolytica parasites (blue) bite and ingest bits of cells from a mouse's intestine (green).

  • Genetics

    
    Science Ticker

    Modern hunter-gatherers' guts host distinct microbes

    A healthy collection of gut bacteria depends on the environment in which people live and their lifestyle, research shows.

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  • Cells

    
    Science Ticker

    How cells keep from popping

    The protein SWELL1 stops cells from swelling so much that they burst, a new study shows.

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  • Development

    
    Scicurious

    The fluid part of semen plays a seminal role

    We often think of reproduction as involving only sperm and egg. But a new study highlights the seminal role of liquid semen in fertility and healthy offspring.

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    Science Ticker

    Mosquito sperm may sense smells

    Mosquitoes’ sperm may have chemical sensors that detect odors similar to the way the insect’s antennae sort smells.

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  • Physiology

    
    Scicurious

    Males compete all the way to sperm shape

    An association between the ratio of certain proteins in mouse sperm and sexual competition raises many questions about what exactly gives a sperm a good head.

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  • Immune Science

  • Microbiology

    
    Science Ticker

    Amoebas’ munching may cause diarrheal disease

    Amoebas biting and swallowing pieces of human cells may be what causes amebic dysentery, a potentially fatal diarrheal disease in the developing world.

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  • Epigenetics

    
    Science Ticker

    Chemical changes to genes make twins' pain differ

    Chemical changes to genes may make identical twins experience pain differently.

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    Letters to the Editor

    Feedback

    Readers discuss the names of really big numbers and whether Lamarckian evolution is making a comeback.
  • Molecular Evolution

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