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Science 30 November 1979:
Vol. 206. no. 4422, pp. 1079 - 1080
DOI: 10.1126/science.493992
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Articles

Science, Vol 206, Issue 4422, 1079-1080
Copyright © 1979 by American Association for the Advancement of Science

articles

Neuronal chemotaxis: chick dorsal-root axons turn toward high concentrations of nerve growth factor

RW Gundersen and JN Barrett

Micropipettes containing 2 to 50 biological units of beta growth factor (NGF) were placed near growing axons of chick dorsal-root ganglion neurons in tissue culture. The axons turned and grew toward the NGF source within 21 minutes. This turning response to elevated concentrations of NGF appears to represent chemotactic guidance rather than a general enhancement of growth rate.


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