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Assay Method Information

Assay Name:  Electrophysiology Assay
Description:  For electrophysiological recordings the external solution was either standard, DMEM supplemented with 10 mM HEPES (pH adjusted to 7.34 with NaOH and the osmolarity adjusted to 320) or Tyrodes salt solution (Sigma, USA) supplemented with 10 mM HEPES (pH adjusted to 7.4 with NaOH; osmolarity=320). The internal pipette solution contained (in mM): NaCl (10), CsF (140), CaCl2 (1), MgCl2 (5), EGTA (11), HEPES (10: pH 7.4, 305 mOsm). Compounds were prepared first as series of stock solutions in DMSO and then dissolved in external solution; DMSO content in final dilutions did not exceed 0.3%. At this concentration, DMSO did not affect sodium currents. Vehicle solution used to establish base line was also contacting 0.3% DMSO.
Affinity data for this assay
 

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Last update November 1, 2007
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