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  • Zebrafish Heart Regeneration

    Zebrafish Heart Regeneration

    Animations

    (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.

  • How a Heart Attack Occurs

    How a Heart Attack Occurs

    Animations

    (37 sec) A 3-D animation that shows how plaques form in a blood vessel, leading to blockage and a heart attack.

  • Sickle Cell Anemia

    Sickle Cell Anemia

    Animations

    (1 min) Sickle cell anemia is a genetic disease that affects hemoglobin.

  • Heart Function

    Heart Function

    Animations

    (33 sec) The job of the human heart—in fact of all vertebrate hearts—is to pump oxygenated blood throughout the cells of the body and to return deoxygenated blood to lungs or gills for replenishment.