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Science 24 April 1981:
Vol. 212. no. 4493, pp. 461 - 463
DOI: 10.1126/science.6259736
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Articles

Science, Vol 212, Issue 4493, 461-463
Copyright © 1981 by American Association for the Advancement of Science

articles

Outward currents in developing Drosophila flight muscle

L Salkoff and R Wyman

The development of two different voltage-sensitive potassium channels was studied in Drosophila flight muscle by voltage clamp techniques. Early in development active channels are not present in the membrane. The first channels to appear are the A current channels, which carry a fast, rapidly inactivating potassium current. The channels for delayed rectification appear later. Channels carrying inward current also appear only after the A current channels. During development, the A current may be easily studied in isolation from other currents and thus provides a desirable system for studying the genetic determinants of this current.


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