Ionic Activity Gradients across the Surface Membrane of Cytoplasmic Droplets Prepared from Chara australis |
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Authors: | Reeves Martin; Shimmen Teruo; Tazawa Masashi |
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Institution: | Department of Botany, Faculty of Science, University of Tokyo Hongo, Tokyo 113, Japan |
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Abstract: | The membrane potential and the ionic activity gradients of K+and Cl across the surface membrane of cytoplasmic dropletsprepared from Chara australis internodal cells, were measuredin high and low ionic strength bathing solutions using liquidion exchange microelectrodes selective for K+ and Cl.Our results indicate that K+ is close to electrochemical equilibriumwhereas Cl is not.
1 Present address: ICI Japan, Palace Hotel Annex Building, Marunouchi,Tokyo, Japan. |
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