The effect of di-and trivalent cations on the membrane potential of the Ehrlich ascites tumor cell has been investigated using micro-electrode techniques. In solutions free of multivalent cations the average membrane potential for 46 cells was 8.3 f 0.5 mv (SE). However, the potentials were not stab
Direct measurement of the membrane potential of ehrlich ascites tumor cells: Lack of effect of valinomycin and ouabain
β Scribed by Thomas C. Smith; Charles Levinson
- Publisher
- Springer
- Year
- 1975
- Tongue
- English
- Weight
- 941 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0022-2631
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The electrical potential difference (PD) across the membrane of the Ehrlich mouse ascites tumor cell has been measured with iniracellular microelectrodes. The mean for 111 cells in control Ringer solution was -11.2 m V ? 0.29 (SE), interior negative. When sulfate replaced chloride in the external me
The effects of valinomycin (25 pM) on the membrane potential and on initial, passive Na+ and K + movements have been determined in Ehrlich ascites tumor cells. The membrane potential of steady-state cells in a physiologic environment was -23.2 mV. Addition of valinomycin induced a small, significant
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