Abstract
Summary
The site of renal tubular potassium reabsorption has been investigated by micropuncture studies in rats. In 8 out of 9 experiments potassium concentrations in fluid collected from the middle third of the proximal convolution are lower than in plasma, Potassium therefore appears to be reabsorbed actively by the proximal convoluted tubules. The site of this process is roughly identical with that of active glucose reabsorption.
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