Sea Urchin Ballet |
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Kate Walton, Graduate Student, Cell Biology, Duke University
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| The beauty and grace of the sea urchin embryo is illustrated here. The delicately swaying red arms are actually neurons required for movement. A green stained muscle surrounds the esophagus. Each muscle fiber is highly organized into a system that contracts to move food from the mouth into the gut of the embryo. Underlying each muscle fiber is a nerve, that innervates the muscle to coordinate swallowing. The yellow regions are areas where the muscle and nerves are so tightly connected that the red and green stains overlap. |
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