The APS Journal Legacy Content is the corpus of 100 years of historical scientific research from the American Physiological Society research journals. This package goes back to the first issue of each of the APS journals including the American Journal of Physiology, first published in 1898. The full text scanned images of the printed pages are easily searchable. Downloads quickly in PDF format.
It is a puzzling fact that PCO2 in the superficial renal cortex is much higher than in renal venous blood. Using a newly developed PCO2 electrode, the authors found the highest level of PCO2 in the first portion of the proximal tubule and concluded that this peak is caused by rapid bicarbonate reabsorption in this part of the tubule. To account fully for the large elevation in cortical PCO2, they postulate a countercurrent CO2 exchange between the arteries and veins in the kidney.
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