... ± 221, r = 0.625, p < 0.01. Variations in plasma bicarbonate concentration or PCO 2 did not contribute to the relationship between SUF P and bicarbonate reabsorption. The data suggest that extracellular fluid phosphate concentration is an important modulator of proximal bicarbonate transport...

... Bicarbonate transport Fluid sampled by micropuncture from the late distal convoluted tubules of alkalotic versus acidotic animals does not show as large differences in pH and HCO – 3 concentration as does the urine from these animals [ 1, 2 ]. These data suggest that the large pH and HCO – 3...