red blood cell physiological measurement red blood cell Na-K-Cl cotransport activity 2021-07-13T14:37:14Z CMO:0003773 Measurement of the level of activity of the erythrocyte membrane transport protein that transports sodium (Na), potassium (K), and chloride (Cl) ions across the cell membrane into erythrocytes. For every sodium and potassium ion transported, this symporter transports two chloride ions, thus maintaining electroneutrality. PMID:1390856 clinical_measurement_ontology erythrocyte Na-K-Cl cotransport activity slaulede