Acids 4 Animals 4 Kidney Tubules, Proximal 4 Male 4 Micropuncture 4 Rats 4 Rats, Wistar 4 acidification 4 animal experiment 4 animal tissue 4 article 4 brush border vesicle 4 controlled study 4 kidney proximal tubule 4 male 4 nonhuman 4 priority journal 4 punch biopsy 4 rat 4 Adaptation, Physiological 2 Aging 2 Angiotensin 2 Angiotensin-Converting Enzyme Inhibitors 2 Bicarbonates 2 Blotting, Western 2 Converting enzyme 2 Hydrogen-Ion Concentration 2 Kidney 2 Kinetics 2 Losartan 2