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Science 2 November 1979:
Vol. 206. no. 4418, pp. 569 - 571
DOI: 10.1126/science.573921
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Articles

Science, Vol 206, Issue 4418, 569-571
Copyright © 1979 by American Association for the Advancement of Science

articles

Strong electrical currents leave the primitive streak of chick embryos

LF Jaffe and CD Stern

The electrical fields above chick embryos were explored with a vibrating probe. These fields indicate that steady currents with exit densities of the order of 100 microamperes per square centimeter leave the whole streak and return elsewhere through the epiblast. The epicenter of these strong exit currents lies near Hensen's node. They are probably pumped into the intraembryonic space by the epiblast and then leak out of the streak because it is a zone of junctional disruption.


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