title: Ion-selective electrodes.
mesh_terms: D000818:Animals; D001419:Bacteria / Q000378:metabolism; D001784:Blood Gas Analysis; D002404:Catheterization / Q000295:instrumentation; D004566:Electrodes; D004573:Electrolytes / Q000032:analysis; D004800:Enzymes, Immobilized; D006801:Humans; D008839:Microelectrodes; D008991:Monitoring, Physiologic / Q000295:instrumentation; D011199:Potentiometry / Q000295:instrumentation*
chemical_list: D004573:Electrolytes; D004800:Enzymes, Immobilized