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Tissue context, not a contradiction.\nexposure: Genetic deletion; increased perfusion pressure; saline and dietary salt challenges\nevidence_span: {\"source_cache\": \"artifacts/sodium-research/30571224.abstract.txt\", \"locator\": \"Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"14f3ce82ae25bafc1d5d935be05b3a8d68420b6d8a36fdbbc5d7e89aba77bc33\", \"start_char\": 0, \"end_char\": 1779, \"text_sha256\": \"14f3ce82ae25bafc1d5d935be05b3a8d68420b6d8a36fdbbc5d7e89aba77bc33\"}\n[sodium-p30571224] Proximal Tubule-Specific Deletion of the NHE3 (Na+/H+ Exchanger 3) Promotes the Pressure-Natriuresis Response and Lowers Blood Pressure in Mice. 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