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Gasser S, Bareza N, Gasser R, Pruthi D, Scheer E, Spichiger-Keller UE, Toferer E
Free Intracellular Magnesium Remains Uninfluenced by Changes of Extracellular Magnesium in Cardiac Guinea Pig Papillary Muscle
Journal of Clinical and Basic Cardiology 2005; 8 (1-4): 29-32

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Fig. 1: Mg2+-ion-selective microelectrode This Image - Fig. 2: Mg2+
Figure/Graphic 2: Mg2+
Changing extracellular concentrations of Mg2+ does not influence intracellular magnesium levels. One can see a typical experiment lasting approximately 3 hours. The signal stabilises some minutes after impalement. The electrode is equilibrated at the end of the experiment. Upon changing extracellullar Mg2+ a small depolarisation of the membrane potential can be seen without influencing the Mg2+-subtraction potential.
 
Mg2+
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Figure/Graphic 2: Mg2+
Changing extracellular concentrations of Mg2+ does not influence intracellular magnesium levels. One can see a typical experiment lasting approximately 3 hours. The signal stabilises some minutes after impalement. The electrode is equilibrated at the end of the experiment. Upon changing extracellullar Mg2+ a small depolarisation of the membrane potential can be seen without influencing the Mg2+-subtraction potential.
 
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