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    "Experiments in Transplanting Limbs and Their Bearing Upon the Problems of the Development of Nerves" (1907), by Ross Granville Harrison

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    Date
    2012-05-10
    Author
    Navis, Adam R.
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    Abstract
    In his 1907 paper, "Experiments in Transplanting Limbs and Their Bearing Upon the Problems of the Development of Nerves," in the Journal of Experimental Zoology that he edited, Ross Granville Harrison tested the development of nerves in transplanted tissue. He studied neural development by examining two competing theories. Victor Hensen proposed a syncytial theory as a way to explain neural development, suggesting that all the nerves of an embryo were connected directly by cytoplasm laid down early in development, and leaving no room for later modification. Santiago Ramón y Cajal proposed a competing outgrowth theory that nerves develop from the central nervous system, pushing through tissues by growing nerve fibers and growth cones. Harrison's experiment refuted many of the claims of the syncytial theory although it did not produce evidence that could directly prove the outgrowth theory.
    URI
    http://hdl.handle.net/10776/1721
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