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Do not infer that dietary salt drives this chain, that every tissue responds identically, or that ROS here proves disease.\nexposure: Acute hypoxia and inhibition of mitochondrial sodium/calcium exchange\nevidence_span: {\"source_cache\": \"artifacts/sodium-research/32728214.abstract.txt\", \"locator\": \"Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets\", \"file_sha256\": \"2780431aa362c99c816f986e923fd65ed0c0324e8c8674af8ff2a2f9367762c1\", \"start_char\": 0, \"end_char\": 1533, \"text_sha256\": \"2780431aa362c99c816f986e923fd65ed0c0324e8c8674af8ff2a2f9367762c1\"}\n[sodium-p32728214] Na+ controls hypoxic signalling by the mitochondrial respiratory chain. 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