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  • Tugging The Cellular Heartstrings

    Tugging The Cellular Heartstrings

    Image of the Week

    The microtubules inside cardiomyocytes buckle when the heart contracts.

  • Sound and Vision

    Sound and Vision

    Image of the Week

    A mass of cells surrounded by blood vessels visualized in a living mouse using photoacoustic imaging.

  • Counting Glomeruli

    Counting Glomeruli

    Image of the Week

    The human kidney contains about 1 million tiny filters called glomeruli with associated nephron tubules.

  • Zebrafish Heart Regeneration

    Zebrafish Heart Regeneration


    (2 min 30 sec) The zebrafish heart is similar to the human heart in many respects. But unlike the human heart, the fish heart closes wounds rapidly and then regenerates to nearly full function. Fibroblast growth factor (FGF) is an important molecule in the regeneration process.