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The properties of the Ca channel currents in chick skeletal muscle cells (myoballs) in culture were studied using a suction pipette technique which allows internal perfusion and voltage clamp. The Ca channel currents as carried by Ba ions were recorded, after suppression of currents through ordinary Na, K and Cl channels by absence of Na, K and Cl ions, by(More)
The action potential was recorded from cultured chick skeletal muscle cells in Na-, Ca-, Cl-free saline containing Ba and tetraethylammonium ions (Ba saline). The action potential consisted of two components: a low-threshold, fast inactivating component and a high-threshold, long-lasting component. Both components of the action potential were dependent on(More)
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