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  • A picture is worth a thousand words
    Browse over 40,000 high quality diagrams, illustrations, and photos. Use them in your presentations or lectures. You can also upload your own images here.
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  • Featured: Variation in shape and length of nerve cells.
    Variation in shape and length of nerve cells.

    Most nerve cells in the brain of an animal are only microns long while others like those that send signals from the brain to the posterior end of the spinal ...

  • Featured: Examples of sensory receptors in the skin of mammals.
    Examples of sensory receptors in the skin of mammals.

    Examples of sensory receptors in the skin of mammals.

  • Featured: Movement of acorns by blue jays allows gene flow between oak populations
    Movement of acorns by blue jays allows gene flow between oak populations

    Movement of acorns by blue jays allows gene flow between oak populations. Gene Flow Between Oak Populations

  • Featured: Synaptic Density
    Synaptic Density

    An interneuron stained with a yellow fluorescent dye that indicates the many locations where other neurons synapse on this cell.

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