# Hydrogen ions--Physiological transport { "id": "S98007045", "title": "Hydrogen ions--Physiological transport", "url": "/topics/S98007045", "kind": "topic-directory", "aeo_cohort": "topic-directory", "provider": "lcsh", "revision": "2867c79cb2a6e3ca", "catalogue_revision": "f050b5d4780b1289", "numeric_address": "291691657080996386", "address_version": "morton4x16-v1", "coordinates": [ 0, 23, 24032, 5120 ], "answer_status": "Directory metadata; local answer requires separate source review", "truth_status": "Subject descriptor, not a factual answer or a demonstrated knowledge gap" } Directory metadata is not a factual answer or evidence of a global knowledge gap. Source: https://id.loc.gov/authorities/subjects/sh98007045 No owner-reviewed local answer yet.