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  • How We Get Our Skin Color

    How We Get Our Skin Color

    Animation

    (3 min 32 sec) This engaging animation shows how human skin cells produce the pigment melanin, which gives skin its color. 

  • Autism and the Structure and Function of Synapses

    Autism and the Structure and Function of Synapses

    Animation

    (2 min 3 sec) Genes associated with autism affect the structure and function of neuronal synapses.

  • Dengue Virus Enters a Cell

    Dengue Virus Enters a Cell

    Animation

    (1 min 33 sec) Infection begins when the dengue virus uses receptors on an immune cell's surface to gain entry and release its genome.

  • HIV life cycle

    HIV life cycle

    Animation

    (4 min 52 sec) How HIV infects a cell and replicates itself using reverse transcriptase and the host's cellular machinery.

  • Human chromosomes

    Human chromosomes

    Animation

    (47 sec) The human genome is organized into structures called chromosomes, consisting of 22 matching pairs and one pair of sex chromosomes.

  • The Proteasome

    The Proteasome

    Animation

    (1 min 44 sec) A 3D animation showing how proteins in the cell are tagged for disposal and degraded by the proteasome.